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Measuring converter
AD4ETH
4 inputs for standardized signal measuring
0 – 10 V, 0 – 20 mA, 4 – 20 mA, ...
Communication via Ethernet
19. July 2011
w w w . p a p o u c h . c o m
0293.01.04
AD4ETH
Papouch s.r.o.
AD4ETH
Datasheet
Created: 9/1/2007
Last update: 7/19/2011 1:46 PM
Number of pages: 48
© 2011 Papouch s.r.o.
Papouch s.r.o.
Address:
Strasnicka 3164
102 00 Prague 10
Czech Republic
Tel:
+420 267 314 267
+420 267 314 268
+420 602 379 954
Fax:
+420 267 314 269
Internet:
www.papouch.com
E-mail:
[email protected]
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AD4ETH
CONTENT
First start .................................................................................................................................................. 5
Basic information ..................................................................................................................................... 5
Description ........................................................................................................................................ 5
Application ........................................................................................................................................ 6
Features ........................................................................................................................................... 6
AD4ETH .................................................................................................................................................. 7
Block diagram and operation ................................................................................................................... 9
Connectors .............................................................................................................................................. 9
Measuring terminals.......................................................................................................................... 9
Power supply .................................................................................................................................. 10
Ethernet .......................................................................................................................................... 10
Examples of connection structure .......................................................................................................... 11
Voltage measurement ..................................................................................................................... 11
Sensors with output of 0 to 20 mA and own power supply .............................................................. 11
Sensors with output of 0 to 20 mA, supplied through current loop ................................................... 12
WEB interface ........................................................................................................................................ 13
WAP ...................................................................................................................................................... 14
Communication via TCP/UDP (Spinel) ................................................................................................... 15
TCP server ..................................................................................................................................... 15
TCP client ....................................................................................................................................... 16
UDP ................................................................................................................................................ 16
Current values in XML format................................................................................................................. 17
Sending the values by HTTP protocol (GET and Post) .......................................................................... 18
HTTP GET ...................................................................................................................................... 19
HTTP POST (SOAP) ...................................................................................................................... 20
Informative E-mails sending ................................................................................................................... 21
SNMP protocol ....................................................................................................................................... 22
Analogue input name ...................................................................................................................... 22
Analogue input status ..................................................................................................................... 22
Measured value .............................................................................................................................. 22
Units ............................................................................................................................................... 22
Values monitoring ........................................................................................................................... 23
Upper limit ...................................................................................................................................... 23
Lower limit ...................................................................................................................................... 23
Limits hysteresis ............................................................................................................................. 23
Device name ................................................................................................................................... 23
Trap text ......................................................................................................................................... 23
MODBUS protocol ................................................................................................................................. 24
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Current value reading ..................................................................................................................... 25
Konfigurace............................................................................................................................................ 26
Configuration via WEB interface ............................................................................................................ 26
Network .......................................................................................................................................... 26
E-mail ............................................................................................................................................. 28
Security ........................................................................................................................................... 30
SNMP ............................................................................................................................................. 31
MODBUS ........................................................................................................................................ 32
Sending .......................................................................................................................................... 33
Other............................................................................................................................................... 34
Channel .......................................................................................................................................... 35
Basic Setup via Telnet ........................................................................................................................... 38
Connection ......................................................................................................................................... 38
IP address is not known .................................................................................................................. 38
IP address is known ........................................................................................................................ 39
Main Menu ......................................................................................................................................... 39
Server................................................................................................................................................. 39
Factory Defaults ................................................................................................................................. 40
Exit without save ................................................................................................................................ 40
Save and exit...................................................................................................................................... 40
IP address change ................................................................................................................................. 41
Universal Software .......................................................................................................................... 41
Technical parameters............................................................................................................................. 43
Available Designs ........................................................................................................................... 44
Indications.............................................................................................................................................. 44
Hard reset .............................................................................................................................................. 45
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AD4ETH
FIRST START
1. Connect all connectors according to chapter Connectors on the page 9. (It is sufficient to
connect power and Ethernet for the first time.)
2. If the default IP address 192.168.1.254 is not acceptable for your computer network,
change it by means described in chapter IP address change on the page 41.
3. Enter the IP address of your AD4ETH to the WEB browser1. Default IP address is
http://192.168.1.254/ .
4. AD4ETH WEB page in Administrator mode will open. There is an icon of a tool in the
upper right corner. You can use this icon to access device settings. You can view help by
pointing the cursor at the given text field.
BASIC INFORMATION
Description
AD4ETH measuring converter is a 4-input A/D converter which enables the user to measure to
four current inputs ranging from 0(4) to 20 mA or voltage between 0 and 10 V. The measured
values are then transferred to a superior system in digital form. AD4ETH has been produced in
three versions differing in their communication interface – the data can be transferred via
RS232/RS485 lines, over USB interface or the Ethernet. The AD4ETH version communicates
via Ethernet.
1
WEB interface is optimized for viewing on PC in at least 1024 by 768 pixels. Also it is optimized for Internet
Explorer 6.0 or 7.0 and Firefox 2.0 browsers. JavaScript has to be allowed.
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Application
 Measurement of values from sensors with voltage or current output.
 Reading of sensors whose output is a standardised current signal
 Digitalisation of measured values from level, pressure, temperature, distance and other
sensors
 Remote supervision over applications indicated above.
Features
 Four analogue inputs for current or voltage
 Measuring scale divided into 10 000 divisions
 Full isolation of the measuring part from power supply and communication lines
 Measurements carried out by a multiplex 16 bit sigma-delta A/D converter
 The maximum measuring speed of each input equals 406 ms
 Communication via 10/100 Ethernet (Internet)
 Communication protocols TCP/IP (Spinel), UDP/IP (Spinel), SNMP2, MODBUS TCP2,
HTTP (WEB, WAP, XML, SOAP)
 Two different measuring modes are available for TCP or UDP connection:
o Single measurement – sends one measured value from each input upon a request.
o Continuous measuring – measures all inputs in the set interval and regularly sends the
measured values via the communication line.
 Internal WEB site allowing to view current values and settings.
 WAP pages showing measured values for cell phone or PDA.
 Measured out values and configuration available in XML format.
 Advanced conversion to user defined ranges and units. (For example if the pressure
sensor is connected to the AD4ETH, it can be transmitted directly as a value in kPa.)

Measured values can be transmitted as a POST request (SOAP-XML) or HTTP GET on
the WEB server.
 Measuring Wix software for temperatures displaying and storing for Windows
 Wide range of power supply voltage (6 to 30 V)
2
There are two versions of AD4ETH – SNMP type and MODBUS type. Each can contain only one
communication protocol. Version is necessary to define when ordering the converter.
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AD4ETH
AD4ETH
1) WEB page
It is possible to easy monitor the
measured values and also to configure
AD4ETH over the Intranet interface. The
pages are secured by means of user
name and password. It is possible to
setup a separate password for the
configuration and another one for the
display of current values. The pages in
AD4ETH can be displayed in Czech or
English according to the setup. (See page
13 for more information.)
2) XML file
It is also possible to import all the values from AD4ETH in the XML file format. This
format is easy to process by the application or to read by the web service. (See page 17
for more information.)
<input id="2" unit="V" val="375.5" min="370" max="400" name="Generator" ...
3) WAP page for PDA of mobile phone
AD4ETH contains a simple WAP page with measured data. It is possible to open this
page in a mobile phone, PDA or another mobile device. Thus the current status of the
device can be viewed whenever needed. (See page 14 for more information.)
4) Inserting the current values into the WEB sites (HTTP GET)
AD4ETH enables you to periodically call a script (for example PHP or ASP) on a
selected WEB server and to hand the measured values and other parameters over to the
server in the form of HTTP GET parameter. Thus you can easily include the currently
measured values directly into your WEB site. (See page 18 for more information.)
www.myserver.net/ad4eth.php?ch=1&unit=V&val=375.50&min=370& ...
5) Current values handing-over to the WEB service (HTTP POST, SOAP)
AD4ETH is also able to periodically send the measured data as HTTP POST in the
format of XML SOAP (Simple Object Access Protocol). This way is ideal for further
processing of the measured values by the WEB service waiting in a server on the
Internet or Intranet. This data in the XML format can be easily processed, e.g. in the.NET
or PHP environment – there is no need to program any communication protocol, etc. The
only thing than needs to be done is to process the delivered XML file. (See page 19 for
more information.)
6) SNMP protocol
The SNMP protocol is used in large companies for the centralized administration and
monitoring of all hardware and technologies. AD4ETH is able to communicate via this
protocol and, according to the setup, It sends SNMP traps when the pre-set critical limits
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are exceeded. It is also able to periodically send traps with current values. (See page 22
for more information.)
7) E-mail
According to the setup, AD4ETH is able to inform the user via email that the critical
limits, pre-defined for individual channels, have been exceeded. (Thanks to services
provided by operators it is possible to forward the e-mail easily to a mobile phone as an
SMS message.) (See page 21 for more information.)
8) TCP or UDP protocol
AD4ETH is also able to operate as the TCP client or TCP server or to communicate via
UDP. The Spinel protocol is used by AD4ETH in these ways of communication. This way
of communication is similar to the serial link communication. (See page 15 for more
information.)
9) MODBUS TCP protocol
AD4ETH is also able to communicate via the standard industry protocol of MODBUS
TCP. (See page 24 for more information.)
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AD4ETH
BLOCK DIAGRAM AND OPERATION
The measuring part is fully isolated from the communication line and power supply.
Fig. 1 – Block diagram of AD4ETH
The AD4ETH measuring device uses one switched sigma-delta A/D converter. After switching
on the power supply voltage, the processor initiates the A/D converter and set the device
parameters according to the data saved in memory. Then the device start to regularly measure
the values of voltage found on the analogue inputs and saves the results into the integrated
memory.
In the continuous measuring mode AD4ETH sends the measured values in the set interval.
CONNECTORS
Measuring terminals
Note: The input types (voltage or current) are unchangeable and must be specified by the user
when ordering the device. Subsequently they can be changed only by the manufacturer.
The measuring terminal unit is a six-slot terminal unit shown in Fig. 2. It contains four inputs and
two grounding terminals.
All four measuring terminals have a joint grounding on the two sides of the terminal unit. This
grounding is isolated from other grounding terminals found in the device.
The measuring terminals have been designed for the measurement of voltage of current. Wires
can be connected individually and fixed by means of a screw (use flat bladed screwdriver
2.5 mm).
Fig. 2 – measuring terminals
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Power supply
DC supply 6 to 30 V shall be connected to the double terminal shown in Fig. 3. The input has an
integrated polarity reversal protection.
Wires can be connected individually and fixed by means of a screw (use flat bladed screwdriver
2.5 mm).
Ethernet
Ethernet (computer network interface) is to be connected to a connector in Fig. 3. It is a
standardized RJ-45 connector for 100/10 Ethernet.
Connect this connector to the PC via a cross-wired cable or to the switch or hub via a direct
cable.
Fig. 3 – Terminals for power supply connection and RJ45 for Ethernet connection
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AD4ETH
EXAMPLES OF CONNECTION STRUCTURE
The following figures show examples of AD4ETH connection structure.
Voltage measurement
An example of voltage supply connection to AD4ETH terminals. The inputs are fully isolated
from the power supply.
Fig. 4 – Voltage measurement
Sensors with output of 0 to 20 mA and own power supply
Sensors with currents outputs can be connected directly to the inputs with current range and
supplied either from their own power supply (in this case, the sensor is isolated from AD4ETH
power supply) or from the same supply as AD4ETH (see the dashed lines in Fig. 5; in this case,
sensors are not isolated).
Fig. 5 – Current sensors with their own power supply
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Sensors w ith output of 0 to 20 m A, supplied through current loop
With a separate source for sensors
In this case, the sensors are isolated from AD4ETH power supply.
Fig. 6 – Current sensors with separate supply through current loop
With a joint source for sensors and AD4ETH
In this case, the sensors are isolated with AD4ETH power supply.
Fig. 7 – Current sensors supplied through current loop from joint source with AD4ETH
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AD4ETH
WEB INTERFACE
It is possible to monitor the status of all inputs and to configure all parameters of the device via
the WEB interface. WEB interface is available on the IP address of AD4ETH.3 The initial IP
address is 192.168.1.254.
The WEB page enables optical highlighting of the value exceeding the set limits or measuring
errors (according to the setup, AD4ETH simultaneously sends an e-mail, SNMP trap etc.)
Fig. 8 – Example of WEB interface (three channels are all right, one shows range exceeding)
WEB interface is available in the Czech and English language.
The interface security is divided into two levels (each with an individual password). The “user”
level only enables users to view the status of inputs. The “administrator” level also enables the
configuration of the device.
Quick help for the individual setup items is displayed when you scroll the pointer of mouse over
the appropriate input field.
AD4ETH enables the user to enter data (text or HTML) available from the main page. This
option is suitable for entering instructions for the operating staff, providing a link to the company
WEB, to other devices etc.
Configuration via the WEB interface is available by clicking on the symbol of the tool and is
described in chapter Configuration via WEB interface beginning on page 26.
3
The interface is optimized for the minimum resolution of 1024x768 pixels and for the browsers of Internet
Explorer 6.0 and 7.0 and Firefox 2.0. It is necessary to enable JavaScript in the browser for the correct
function of the interface.
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WAP
WAP interface allows monitoring of the current values from AD4ETH by means of a mobile
phone, PDA or another mobile device. WAP is designed with minimum functionality with respect
to the lowest possible data transmission.
WAP is available on the IP address of AD4ETH in the /wap folder. The initial setup of AD4ETH
contains the following address of wap http://192.168.1.254/wap .
It is possible to update WAP automatically after a pre-defined interval. This interval can be set in
the WEB setup in the Other settings tab. The default period is 30 sec.4
WAP is not secured, there is no user name or password required to access it. It is possible to
restrict the display of the values on WAP in the WEB setup in the Security tab.
Fig. 9 – Example of WAP interface opened in a mobile device
4
Periodical update is performed by the refresh meta tag. This method of update is not supported by all mobile
devices.
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AD4ETH
COMMUNICATION VIA TCP/UDP (SPINEL)
With AD4ETH it is possible to communicate via the TCP or UDP data channel using the Spinel
protocol.
Communication protocol Spinel (binary and ASCII format) is described in a separate document
including the examples, which is available for downloading from the AD4ETH WEB page on
http://www.papouch.com/ .
Spinel protocol communication is easy to test and tune with the program Spinel terminal which
is available for the download on the address http://spinel.papouch.com/ .
Fig. 10 – Example of the Spinel terminal program, tunning the communication with AD4ETH
AD4ETH allows the following types of data connection:
TCP server
In the TCP server mode, AD4ETH expects the connection on the data port (set via the WEB
interface in the Local port item). AD4ETH uses this TCP connection to communicate with a
remote device by means of the Spinel protocol.5
5
It is not possible to view the currently set values via the WEB in this mode and it is possible to perform only
some settings via the WEB.
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TCP client
In the TCP client mode, AD4ETH connects automatically to a remote IP address (set in the
Remote IP address) a the port (set in the Remote port). AD4ETH uses this TCP connection to
communicate with a remote device by means of the Spinel protocol.5
UDP
In the UDP mode, the data from AD4ETH is routed to a device with the IP address set in the
Remote IP address item or, without routing, to a required address if the broadcast address of
your network is set as the Remote IP address (a so called “UDP broadcast“). In this case,
AD4ETH communicates with any device which asks.5
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AD4ETH
CURRENT VALUES IN XML FORMAT
After the initialization of AD4ETH, it is possible to get current values in the XML format. The file
with the values is available on the IP address of the device in the /data.xml file (the
http://192.168.1.254/data.xml file for a device in the default configuration). This file is secured by
means of a user name and password according to the setup via WEB.6
An example of the file with data in the xml format:
<?xml version="1.0" encoding="iso-8859-2"?>
<root xmlns="http://www.papouch.com/xml/ad4eth/actualvalues">
<input id="1" unit="V" val="375,5" min="" max="" dot="2" bar="1000" stat="0" name="Generator" />
<input id="2" unit="W" val="450" min="400" max="10000" dot="0" bar="2000" stat="0" name="Test" />
<input id="3" unit="cm" val="120" min="0" max="400" dot="0" bar="5000" stat="0" name="Hladina" />
<input id="4" unit="cm" val="73" min="0" max="10000" dot="2" bar="7000" stat="2" name="Rizeni" />
</root>
The meaning of individual parameters:
id ......... channel number (1 to 4)
unit ..... unit (user defined string with the unit)7
val ....... measured value (decimal number recalculated according to the user defined
range)8
min ....... lower limit (decimal number or blank value if not pre-defined)9
max ....... upper limit (decimal number or blank value if not pre-defined)10
dot ....... number of decimal places the displayed values are to be rounded to (whole
number ranging from 0 to 3 according to user setup)11
bar ....... measured value as a number from the range of 0 to 10 000
name ..... channel name (user defined string)12
stat ..... measured value status. The status can be as follows:
status
meaning
0
Value is OK.
1
Value still not available.
2
Input range upper limit has been exceeded.
Input range lower limit has been exceeded.
(applicable only for the input of 4 to 20 mA)
Measurement error. Invalid value.
3
4
6
Basic HTTP authentification (HTTP 401).
7
See the settings item named Unit on page 36.
8
See the settings items named Upper range limit and Lower range limit on page 36.
9
See the settings item named Lower range limit on page 36.
10
See the settings item named Upper range limit on page 36.
11
See the settings item named Number of decimal places for math rounding on page 36.
12
See the settings item named Channel name on page 35.
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SENDING THE VALUES BY HTTP PROTOCOL (GET AND POST)
AD4ETH is able to send the measured values to a WEB server on the Internet or company
intranet. The values are then easy to process using the common scripting language (PHP, ASP,
.NET, …), to display, store, analyze, etc.
Sending of the values works in the following way – the path to the server script is entered in the
setup and AD4ETH sends the measured values to it in a pre-defined interval. It is possible to
send values to the server from AD4ETH as a request of the HTTP GET or HTTP POST type (in
the SOAP XML format).
Fig. 11 – Principle of sending the measured values from AD4ETH to a WEB server on the Internet
and then to User’s Web browser
The setup of the sending process is performed in the Sending tab in the configuration via WEB.
(AD4ETH is able to send either POST or GET, not both of them simultaneously.)
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AD4ETH
HTTP GET
The HTTP GET request is sent separately for each channel. The the form of the request is
illustrated in the following example:
../ad4.asp?chan=1&unit=V&val=375.50&min=&max=&stat=0&name=Generator&id=
As evident from the example, the request is in a form well-known to web programmers from the
strandard method of form data sending. It eliminates the necessity to learn new methods of
programming and the processing can be handled by the mechanism known from web forms
processing (<form name="myform" action=…).
The request is sent in an interval set in the Sending period item on page 34. Four requests are
sent in the intervals, each with the values from one channel.
The parameters in GET are as follows:
chan ..... channel number (1 to 4)
unit ..... unit (user defined string with the unit)13
val ....... measured value (decimal number recalculated according to the user defined
range)14
min ....... lower limit (decimal number or blank value if not pre-defined)15
max ....... upper limit (decimal number or blank value if not pre-defined)16
stat ..... measured value status. The status can be as follows:
status
meaning
0
Value is OK.
1
Value still not available.
2
Input range upper limit has been exceeded.
Input range lower limit has been exceeded.
(applicable only for the input of 4 to 20 mA)
Measurement error. Invalid value.
3
4
name ..... channel name (user defined string)17
id ......... device identifier (user defined device identifier)18
13
See the settings item named Unit on page 36.
14
See the settings items named Upper range limit and Lower range limit on page 36.
15
See the settings item named Lower range limit on page 36.
16
See the settings item named Upper range limit on page 36.
17
See the settings item named Channel name on page 35.
18
See the settings item named Device ID on page 34.
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HTTP POST (SOAP)
The HTTP POST request is sent in an interval set in the Sending period item on the 34 in the
form illustrated by the following example:
Header:
POST /ad4.asp HTTP/1.1
Host: www.example.com
Content-type: application/soap+xml; charset=iso-8859-2
Content-length: [the real length of the request body]
Request body:
<?xml version="1.0" encoding="iso-8859-2"?>
<soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soapenvelope">
<soap12:Body>
<root xmlns="http://www.papouch.com/xml/ad4eth/act">
<input ch="1" stat="0" unit="" val="0" min="0.000" max="0.000" mode="0" name"---" />
<input ch="2" stat="0" unit="" val="0" min="0.000" max="0.000" mode="2" name"---" />
<input ch="3" stat="0" unit="" val="0" min="0.000" max="0.000" mode="1" name"---" />
<input ch="4" stat="0" unit="" val="0" min="0.000" max="0.000" mode="1" name"---" />
</root>
</soap12:Body>
</soap12:Envelope>
Meaning of individual parameters:
ch ......... channel number (1 to 4)
stat ..... measured value status. The status can be as follows:
status
meaning
0
Value is OK.
1
Value still not available.
2
Input range upper limit has been exceeded.
Input range lower limit has been exceeded.
(applicable only for the input of 4 to 20 mA)
Measurement error. Invalid value.
3
4
unit ..... unit (user defined string with the unit)19
val ....... measured value (decimal number recalculated according to the user defined
range)20
min ....... lower limit (decimal number or blank value if not pre-defined)21
max ....... upper limit (decimal number or blank value if not pre-defined)22
19
See the settings item named Unit on page 36.
20
See the settings items named Upper range limit and Lower range limit on page 36.
21
See the settings item named Lower range limit on page 36.
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AD4ETH
mode ..... indicates whether the measured values monitoring is („1“) or is not („0“) switched on
name ..... channel name (user defined string)23
INFORMATIVE E-MAILS SENDING
Based on the settings, AD4ETH is able to send e-mails informing the user that limits defined for
individual channels have been exceeded. (Thanks to services provided by operators it is
possible to forward the e-mail easily to a mobile phone as an SMS message.)
The e-mail can be sent to one address. The body of the e-mail contains information defining the
channel in problem, showing the value that has been exceeded and the current value.
The emails can be set in the E-mail tab (see page 28) in the WEB configuration. Here you can
find the setup of the e-mail account as well as the SMTP server authorization (if required). The
function of value monitoring can be set in the cards of individual channels the user wishes to
monitor.
22
See the settings item named Upper range limit on page 36.
23
See the settings item named Channel name on page 35.
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SNMP PROTOCOL
(The version of AD4ETH with the SNMP protocol does not contain the MODBUS TCP protocol.)
(The version of AD4ETH with the MODBUS TCP protocol does not contain the SNMP protocol.)
The SNMP protocol is used in large companies for the centralized administration and monitoring
of all hardware and technologies. AD4ETH is able to communicate via this protocol and,
according to the setup, It sends SNMP traps when the pre-set critical limits are exceeded. It is
also able to periodically send traps with current values.
A list of tables and their objects for the access over the SNMP protocol follows. SNMP
parameters, including the address of SNMP client, can be set via the WEB interface in the
Administrator mode.
Analogue input name
ID: 1.3.6.1.4.1.18248.17.3.2.1.1.1.1 - 4
Type: String
Action: Read only
The object contains the current name of the pre-selected analog input.
Analogue input status
ID: 1.3.6.1.4.1.18248.17.3.2.1.1.2.1 - 4
Type: Integer
Action: Read only
The object contains the channel status, representing the current status of the measured value in
the following object. Options:
0 … Value is up-to-date and valid
1 … Value is not up-to-date or is not available
2 … Upper limit exceeding
3 … Lover limit exceeding (only for the range of 4 to 20 mA)
4 … Measurement error
Measured value
ID: 1.3.6.1.4.1.18248.17.3.2.1.1.3.1 - 4
Type: String
Action: Read only
The object contains the currently measured value form the pre-selected analogue input as a
string.
Units
ID: 1.3.6.1.4.1.18248.17.3.2.1.1.4.1 - 4
Type: String
Action: Read only
The object contains a string with the definition of units.
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AD4ETH
Values monitoring
ID: 1.3.6.1.4.1.18248.17.3.3.1.1.1.1 - 4
Type: Integer
Action: Read only
The object contains the current status of the value monitoring function for a given channel.
Options:
0 … Monitoring switched on
1 … Monitoring switched off
Upper limit
ID: 1.3.6.1.4.1.18248.17.3.3.1.1.2.1 - 4
Type: String
Action: Read only
Upper limit of the measured value. A trap is sent when the value is exceeded. (If the value
monitoring function is switched on.)
Lower limit
ID: 1.3.6.1.4.1.18248.17.3.3.1.1.3.1 - 4
Type: String
Action: Read only
Lower limit of the measured value. A trap is sent when a measuring result drops below this
value. (If the value monitoring function is switched on.)
Limits hysteresis
ID: 1.3.6.1.4.1.18248.17.3.3.1.1.4.1 - 4
Type: String
Action: Read only
A hysteresis value which shall apply below the upper and above the lower limit.
Device name
ID: 1.3.6.1.4.1.18248.17.3.1.1.0
Type: String
Action: Read only
The object contains the device name.
Trap text
ID: 1.3.6.1.4.1.18248.17.3.1.2.0
Type: String
Action: Read only
The object contains the text of the current trap.
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MODBUS PROTOCOL
(The version of AD4ETH with the SNMP protocol does not contain the MODBUS TCP protocol.)
(The version of AD4ETH with the MODBUS TCP protocol does not contain the SNMP protocol.)
MODBUS TCP is a standard industry protocol. AD4ETH is able communicate via this protocol.
For complete information and documentation of the MODBUS TCP protocol see
www.modbus.org .
AD4ETH is able to use the 0x04 code, reading the input registers. The MODBUS enables the
user to read the current status of all the four input channels including the just measured values.
The standard MODBUS port is 502. It can be changed via the WEB interface on the MODBUS
tab.
Fig. 12 – Example of the values of all registers read from AD4ETH by the MODBUS TCP protocol
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AD4ETH
Current value reading
This is the way the system reads the last measured value from all or just some of the channels.
It returns values in the form of whole numbers as well as decimal numbers (32bit float pursuant
to IEEE 754).
The values are sent simultaneously in the two formats. The first one is the 16bit value within the
range of 0 to 10 000 (integer in the order of MSB:LSB). The second one is a value recalculated
for the current range based on the current setup as a decimal number in the 32 bit float format
pursuant to IEEE 75424.
(The setup for value recalculation can be carried out via the WEB interface in the tab of the
required channel. See Upper range limit and Lower range limit on page 36.)
Enquiry:
Function code
1 Byte
0x04
Initial address
2 Bytes
channel 1: 0x0000
channel 2: 0x0004
channel 3: 0x0008
channel 4: 0x000C
No. of registers
2 Bytes
4
Function code
1 Byte
0x04
No. of bytes
1 Byte
Status
2 Byte
8
0x0000 – valid value within the range
0x0001 – value not available yet
0x0002 – upper limit exceeding
0x0003 – lover limit exceeding (applicable only to the
range of 4 to 20 mA)
Other values – other errors
INT value
2 Byte
Measured value. Whole number ranging from 0 to 10 000
Float value
4 Byte
Measured value. 32 bit float pursuant to IEEE 754
Function code
1 Byte
0x8425
Error code
1 Byte
01 or 02 or 03 or 04
Reply:
Error:
24
For the description of the IEEE 754 standard see e.g.: http://en.wikipedia.org/wiki/IEEE_754
25
The complete description of error codes can be found in the original documentation of the MODBUS
protocol on www.modbus.org .
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KONFIGURACE
AD4ETH can be configured in the following ways:

WEB interface: This interface is accessible from the IP address of the device. The
default IP address is 192.168.1.254.

Telnet: Telnet is accessible from the IP address of the device. The default setup is
192.168.1.254, port 9999. The description of Telnet can be found on page 37.
CONFIGURATION VIA WEB INTERFACE
The WEB interface is accessible from the IP address of the device. The default IP
address is 192.168.1.254. To enter the configuration click on the tool icon on the main
page of the device (see the right picture).
(The interface is optimized for the resolution of at least 1024x768 pixels and for the Explorer 6.0
and 7.0 a Firefox 2.0 browsers)
This interface enables the user to monitor the status of all the inputs and to configure all the
parameters of the device.
The interface security is divided into two levels (each with an individual password). The “user”
level only enables users to view the status of inputs. The “administrator” level also enables the
configuration of the device.
Quick help for the individual setup items is displayed when you scroll the pointer of mouse over
the appropriate input field.
Network
In this part it is possible to set network parameters, such as the IP address etc. including the
communication mode. Any changes made in this part require the device to be restarted.
Fig. 13 – Network settings and communication mode configuration
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AD4ETH
IP address
Default: 192.168.1.254
The network address of AD4ETH. Enter the address in numbers separated by dots. The default
address is 192.168.1.254.
Local port
Default: 10001
The data port on which AD4ETH expects the incoming TCP connection in the “TCP server”
communication mode.
Netmask
Default: 255.255.255.0
Sets the netmask (the range of IP addresses used within the network segment) containing the
AD4ETH. The netmask can also be expressed by means of letters. (A means 255.0.0.0; B
means 255.255.0.0; C means 255.255.255.0)
Gateway IP
Default: 0.0.0.0
The IP address of the computer or router connecting the convertor with other (superior)
networks and/or with the Internet. In case the convertor is located within an independent
network or does not have an access to external networks, enter 0.0.0.0 as the address.
Remote IP address
Default: 0.0.0.0
The IP address of the device the convertor will connect to in the “TCP client“ communication
mode.
Remote port
Default: 0
The port of the remote device the convertor will connect to in the “TCP client“ communication
mode.
WEB port
Default: 80
Here, it is possible to change the default value of the port enabling the access to the WEB site.
This option is suitable in case AD4ETH is located behing a firewall or a router with blocked port
80 (standard WEB port). If this is the case, find an unoccupied port to be set as the WEB port.
The WEB site will be then accessible from the browser after entering the address in the form of
http://[IP-adresa]:[port] For example: http://192.168.1.254:8080 port 8080.
Communication mode
Default: WEB (HTTP)
Tato volba nastavuje typ komunikace AD4ETH. Jsou k dispozici tyto módy: TCP server, TCP
client, UDP a WEB (HTTP).
In the TCP server mode, AD4ETH expects the connection on the data port (set via the WEB
interface in the Local port item). AD4ETH uses this TCP connection to communicate with a
remote device by means of the Spinel protocol. It is not possible to view the currently set values
via the WEB in this mode and it is possible to perform only some settings via the WEB.
Warning: This mode does not enable the user to use options configurable in the E-mail, SNMP,
MODBUS, Sending and Channel tabs.
In the TCP client mode, AD4ETH connects automatically to a remote IP address (set in the
Remote IP address) a the port (set in the Remote port). AD4ETH uses this TCP connection to
communicate with a remote device by means of the Spinel protocol. It is not possible to view the
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currently set values via the WEB in this mode and it is possible to perform only some settings
via the WEB.
Warning: This mode does not enable the user to use options configurable in the E-mail, SNMP,
MODBUS, Sending and Channel tabs.
In the UDP mode, the data from AD4ETH is routed to a device with the IP address set in the
Remote IP address item or, without routing, to a required address if the broadcast address of
your network is set as the Remote IP address (a so called “UDP broadcast“). In this case,
AD4ETH communicates with any device which asks. It is not possible to view the currently set
values via the WEB in this mode and it is possible to perform only some settings via the WEB.
Warning: This mode does not enable the user to use options configurable in the E-mail, SNMP,
MODBUS, Sending and Channel tabs.
Fig. 14 – Current values display is not available in the TCP server, TCP client and UDP modes as well as the
options configurable in the E-mail, SNMP, MODBUS, Sending and Channel tabs
The WEB (HTTP) mode enables the user to monitor the currently measured values via the WEB
interface, to send the measured values in the HTTP GET or POST formats (SOAP XML) and to
communicate via the SNMP protocol. This mode also enables AD4ETH to inform the user via
email about any occurrence of critical limits exceeding.
E-mail
This part configures the email account used by AD4ETH as well as the email address to which
emails about critical limits exceeding shall be sent.
Fig. 15 – Emails configuration
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AD4ETH
Activate e-mail sending
Default: Disabled
By ticking this field you will activate the function of channel critical level monitoring. The emails
will be sent if the monitoring function is switched on and set for individual channels in the
relevant tabs.
SMTP server IP address
Default: 0.0.0.0
The IP address of the SMTP server for outgoing mail.
E-mail address of this device
Default: (Nothing)
The email address of AD4ETH. Any email address can be entered here (even a nonexistent
one). This address will be shown in the sent email as sender’s address.
Recipient E-mail address
Default: (Nothing)
Recipient’s email address. Here enter the email address which you wish the information about
limits exceeding to be sent to.
SMTP server require authorization
Default: Disabled
Tick this field and fill in the three fields below if the SMTP entered in the SMTP server IP
address requires the authorization of user identification (used as a protection against SPAM
sending).
Name
Default: (Nothing)
Name for the authorization on the SMTP server.
Password
Retype password
Default: (Nothing)
Password for the authorization on the SMTP server.
After saving configuration, device will send information e-mail
Default: Disabled (cannot be changed)
If this field is ticked during the configuration saving, the device will send a testing e-mail to the
entered address in order to verify that the configuration has been done as required.
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Security
The WEB interface security is set here. The security consists of two levels. Both levels have a
common user name but different passwords. The lower “User” level only enables the user to
view the measured values. The “administrator” level also enables the configuration of the
device. Any changes made in this part require the device to be restarted.
Fig. 16 – Security Settings
Name for administrator and user
Default: (Nothing)
The administrator and user have a common field for entering the name. The name together with
the relevant password is required to be entered into the system during opening the relevant
WEB page.
Allow WAP pages
Default: Enabled
This tick enables the values to be viewed via the WAP interface (accessible at
http:/[ip-address]/wap ).
The option for WAP enabling or disabling is here because the WAP interface is always
unsecured and no password is required to access it.
New user password
Retype new user password
Default: (Nothing)
User’s password.
New administrator password
Retype new administrator password
Default: (Nothing)
Administrator’s password.
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AD4ETH
Check rights authorization
Default: (Nothing)
Whenever there is made any change to the security settings, the system requires the user to
enter the relevant administrator password.
SNMP
This part sets the parameters for the communication via SNMP.
(This tab is not available in the version with MODBUS protocol)
Fig. 17 – SNMP Settings
Read community
Default: public
The name of the SNMP community for reading.
Write community
Default: private
The name of the SNMP community for writing.
SNMP client IP address
Default: 0.0.0.0
The IP address of the SNMP manager which the traps (automatic messages) are sent to.
Current status sending period
Default: 0
If a number higher than 0 is entered, a trap with the currently measured values is sent in the set
interval. The interval can be set in whole minutes ranging up to 3600 minutes.
Activate sending SNMP traps
Default: Disabled
Global activation of the automatic messages (traps) sending via the SNMP protocol.
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MODBUS
This part sets the parameters for the communication via MODBUS TCP. Any changes made in
this part require the device to be restarted.
(This tab is not available in the version with SNMP protocol.)
Fig. 18 – MODBUS Settings
MODBUS port
Default: 502
The number of the port on which the device communicates with the surroundings via the
MODBUS TCP protocol.
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AD4ETH
Sending
Here it is possible to set the automatic sending of the measured values to the WEB server as a
request of the HTTP GET or HTTP POST type in the SOAP XML format.
Fig. 19 – Settings for values sending to the WEB server
Method of sending
Default: HTTP GET
AD4ETH is able to send the measured values as a request HTTP GET or HTTP POST request
(SOAP XML). Detailed information about these methods can be found in chapter Sending the
values by HTTP protocol (GET and Post).
URL address of server
Default: (Nothing)
Here enter the URL address of the WEB server to which the measured values are to be sent.
The address shall be set in the format: www.example.com.
Local address of script
Default: (Nothing)
Here enter the local address of the script on the server. For example, if your server contains the
“scripts” directory with the ad4.asp file intended for the processing of the measured values,
enter the /scripts/ad4.asp text into the field.
IP address of server
Default: 0.0.0.0
Here enter the IP address of the WEB server (the IP address of the server entered in the URL
address of server field).
Server port
Default: 80
Port number on the WEB server.
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Sending period
Default: 0
The interval in which the measured values are to be sent. It is possible to set an interval ranging
from 10 seconds to 1 hour. If the interval is set to 0, the sending function is switched off.
Device ID
Default: (Nothing)
Device ID is a string on any characters which is included into GET as an id parameter. It can be
used for identification etc.
Other
Here it is possible to set some other parameters of the device.
Fig. 20 – Other Settings
Language
Default: English
This option contains a list of WEB interface language version. Currently, the WEB interface is
available in Czech and English languages. Only some of the texts change after selecting the
other language and saving the settings. For complete change of all the texts it is necessary to
reopen the page.
Device name
Default: AD4ETH
Here is it possible to allocate a name to the device. The name can enable the user to easily
identify e.g. the measuring point etc.
WAP page refreshing period
Default: 30
Here it is possible to define the interval of the WAP page refreshing. If the value is set to 0, the
page does not refresh automatically and the displayed content needs to be refreshed manually
by reopening the page. (Automatic refreshing is performed by the meta-refresh tag. This
method is not supported by all mobile phones.)
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AD4ETH
Minimize main page
Default: Disabled
If this field is ticked, the page size in the browser is automatically reduced to the smallest
possible displaying size. This change of the size becomes effective only after the page is
reopened in the browser.
Field for user informations
Defualt: (Empty)
This field is available for entering a text or HTML code which is displayed after clicking on the i
symbol on the main page. This can be used for entering links to the company website or to the
intranet, measuring instructions etc.
Channel
Here you can set measuring parameters separately for each channel. The standard output from
AD4ETH is a value ranging from 0 to 10 000. AD4ETH is able to recalculate this range into
another one according to user setup. For example, if a pressure sensor is connected, it is
possible to enter its output range and AD4ETH will directly display the measured value
recalculated for example in Pascals. (See the example bellows the figure.)
The input range given by the AD4ETH hardware is displayed next to the channel number.
Fig. 21 – Setup of the measuring input parameters
Example: The pressure sensor with the output of 0 to 10 V is connected to AD4ETH. The
sensor measures the pressure in the range of 0 to 100 kPa with the accuracy of 0,1 kPa. Enter
100 into the Upper range limit field (because 10 V from the sensor stands for 100 kPa). Enter 0
to the Lower range limit field (because the sensor measures from 0 kPa). Enter 1 into the
Number of decimal places for math rounding field (because the sensor measures with the
accuracy of 0,1 kPa). Enter kPa into the Unit field (because the output shall be in kilo Pascals).
AD4ETH will then display values within the range 0,0 to 100,0 kPa.
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Channel name
Default: ---
Text description of the input.
4-20mA sensor connected to input
Default: Disabled
(This setting is visible only for the channel with the current range of 0 to 20 mA.) Tick the box
only in the case that a sensor with the range of 4 to 20 mA is connected to this current input.
AD4ETH will choose another mechanism of the recalculation which will allow using the whole
resolution of the converter and also detecting the disconnection of the sensor (or value dropping
below the range).
Fig. 22 – Channel with the current input range contains an additional field for the selection of the sensor output
range
Warning: When the channel is switched to “4 to 20 mA”, AD4ETH indicates not only exceeding
the upper but also value dropping below the lower limit if the current is lower than 4 mA. It
means that the drop is indicated also when the sensor is not connected. (Because the current is
null.)
Unit
Default: (Nothing)
Enter here the text description of the unit which is the output of the recalculation specified in the
following fields.
Upper range limit
Default: 10000
Enter the positive real number as the upper range limit, corresponding to the maximum input
range.
Lower range limit
Default: 0
Enter the positive real number as the lower range limit, corresponding to the minimum input
range.
Number of decimal places for math rounding
Default: 0
Enter the number of decimal places for math rounding of the measured value.
Monitoring of measurement value
Default: Disabled
It is possible to switch on the monitoring of measured values from this channel. If the measured
value either exceeds the Upper range limit or drops-off below the Lower range limit, the
information about it is sent via e-mail, SNMP, … (according to the setup).
Upper limit
Default: 0
Enter the maximum acceptable value. This value exceeding will cause the sending of the
information via e-mail, SNMP, etc. according to the setup.
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AD4ETH
Lower limit
Default: 0
Enter the minimum acceptable value. This value dropping-off will cause the sending of the
information via e-mail, SNMP, etc. according to the setup.
Hysteresis
Default: 0
Enter the hysteresis value which will apply below the Upper range limit and above the Lower
range limit. (The term hysteresis is explained in the attachment of the document
“Communication protocol Spinel“, downloadable from www.papouch.com in the section
dedicated to AD4ETH.)
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BASIC SETUP VIA TELNET
Connection
IP address is not known
1) Open the window of the cmd. command (In OS Windows choose Start/Run, enter cmd
into the provided line and press Enter.)
2) Make the following entry into the ARP chart:
a. Enter arp –d and confirm by Enter. This will delete the current ARP table.
b. Use the following command to allocate an IP address to the module MAC address:
arp –s [new_ip_address] [MAC_address_AD4ETH]
example: arp -s 192.168.1.254 00-20-4a-80-65-6e
3) Now open Telnet. (By typing in telnet and pressing Enter. 26)
4) Type open [new_ip_address] 1 and confirm.
5) The terminal will display an error message informing the user that no connection has
been established. Still it is necessary to carry out the aforesaid in order to enable the
module to enter the required IP address into the ARP table.
6) Connect to the module IP address. (Enter open [IP address in the dotted
format] 9999 and press Enter.)
7) So far you only managed to enter the module configuration. The IP address has not been
set yet. It must be set using the relevant item in the Server Configuration > IP Address
menu. If the configuration is closed without saving the setup and IP address
configuration, it is necessary to repeat the whole process!
8) If the IP address is valid, the device will display introductory information ending with the
following text:
Press Enter for Setup Mode
Now it is necessary to press Enter within three seconds, otherwise the configuration will
be closed.
9) The device will display its complete setup.
10) At the end of the list there is a section called “Change setup:“ providing a list of
parameter groups which can be set. Changes to network parameters can be made
through the “Server” section.
26
In OS Windows Vista, the client for Telnet is not a standard part of the system. Install it using the following
procedure:
a) Open the “Control Panels/Programs and Features” menu.
b) On the left, click “Enable or disable features of Windows system “ (this option requires the administrator
to log in).
c) The “Features of Windows system“ window displays. Here tick the “Telnet service Client“ field and click
Ok. The client for Telnet will be installed.
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AD4ETH
IP address is known
1) In OS Windows choose Start/Run, enter telnet in the provided line and press Enter. 26
2) Connect to the module IP address. (Enter open [IP address in the dotted
format] 9999 and press Enter.)
3) If the IP address is valid, the device will display introductory information ending with the
following text:
Press Enter for Setup Mode
Now it is necessary to press Enter within three seconds, otherwise the configuration will
be closed.
4) The device will display its complete setup.
5) At the end of the list there is a section called “Change setup:“ providing a list of
parameter groups which can be set. Changes to network parameters can be made
through the “Server” section.
Main Menu
Individual menu items can be chosen using the numbers written in front of them. Choose the
required number and press Enter.
The menu structure is as follows:
Change Setup:
0 Server
...
7 Defaults
8 Exit without save
9 Save and exit
Your choice ?
Server
Basic Ethernet setups.
The following items can be found in this part:
IP Address : (192) .(168) .(001) .(122)
Set Gateway IP Address (N) ?
Netmask: Number of Bits for Host Part (0=default) (16)
Change telnet config password (N) ?
IP Address
IP address of the module. The numbers of the IP address shall be entered individually and
separated by Enter.
Default value: 192.168.1.254
Set Gateway IP Address
Gateway IP address
In the “Set Gateway IP Address“ item enter “Y“ to change the Gateway IP address. The system then
invites you to change the Gateway IP address. The numbers of the IP address shall be entered
individually and separated by Enter.
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Netmask
Here you can set the number of bits of the IP address constituting the network part.
The Netmask is set as a number of bits determining the range of possible local network IP
addresses. For example, if the value 2 is entered, the Netmask has the following structure
255.255.255.252 . The entered value specifies the number of bits from the right. The maximum is
32.
Default value: 8
Example:
The mask 255.255.255.0 (binary 11111111 11111111 11111111 00000000) corresponds to number
8.
The mask 255.255.255.252 (binary 11111111 11111111 11111111 11111100) corresponds to
number 2.
Change telnet config password
Enter new Password
This item can be used to set a new password which is required before any configuration is made via
telnet or WEB interface.
In item “Change telnet config password“ enter “Y“ to change the password. The system then invites
you to change the password.
Factory Defaults
By pressing number 7 the device restores the default setting.
Default setting means that the IP address is set to 192.168.1.254, all passwords are cancelled,
names and parameters are deleted.
Exit without save
Closing the setting mode without saving the changed parameters.
Save and exit
This option saves the changes. If any parameter has been changed, the device is then
restarted. The restart takes several tens of seconds.
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AD4ETH
IP ADDRESS CHANGE
The IP address can be changed by one of the following methods:

over the WEB interface

using a universal software27

via the ARP protocol and Telnet
The WEB interface can be unavailable during the first connection if the initial IP address is not
compatible with the network the AD4ETH device is connected to. In this case, the IP address
can be set using the Universal Software or via the ARP protocol and Telnet.
The setup via the ARP protocol and Telnet is described in the chapter Basic Setup via Telnet
on page 38.
Universal Software
This software can be used for the setup of basic network parameters. After running the software
click on the “Set IP” button.
This command enables you allocate a new IP address to the device. After clicking the button,
the window shown in Figure 3 displays. Enter the MAC address of the Battery monitor and click
“Next”.
Fig. 23 – the first window of the guide for a new IP setup
Now the relevant MAC address is searched. If it is found, the window shown in Figure 5
displays. If it is not found, the warning shown in Figure 4 displays.
27
This software can be downloaded from www.papouch.com.
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fig. 24 – the entered address has not been found
Choose “Abort” here, which will enable you to continue with the guide even though the MAC
address has not been found.
Enter all parameters complying with your network into the window shown in Figure 5. If you are
not sure which values need to be filled in, contact your network administrator, who will allocate
you the required values. The parameters will be changed by clicking the “Set up” button.
Fig. 25 –IP setup guide > setting of IP, mask and gateway
If the MAC address has not been found in the network, the dialogue shown in Figure 6 displays.
fig. 26 – MAC address has not been found
If you are sure the device is property connected to the network and the MAC address has been
entered correctly, click “Yes”. The program will try to send a command for network parameters
reconfiguration to the entered MAC address. A window informing the user whether the setting
has been made successfully or not will appear in a little while.
If yes, the network parameters are now set as required and it is possible to make a connection
via the WEB browser.
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AD4ETH
TECHNICAL PARAMETERS
Analogous inputs:
Number of inputs ............................... 4
Input type ........................................... unipolar
Voltage input range ........................... 0 – 10 V; 10 000 divisions
Input impedance (voltage inputs) ....... 1 MΩ (100 kΩ / 1 V)
Current input ranges .......................... 0 – 20 mA; 4 – 20 mA; 10 000 divisions
Calibration ......................................... 10 000 divisions/range
A/D converter resolution .................... 16 bits
Maximum non-linearity....................... 10 divisions
Maximum zero error .......................... 10 divisions
Maximum rang error .......................... 10 divisions
Maximum measuring speed............... 406 ms (all channels)
Calibration method ............................ software28
Control interface:
Type................................................... 10/100 Ethernet
Connector .......................................... RJ45
Communication speed for virtual serial port..... 115 200 Bd
Communication protocol .................... Spinel, TCP/IP, UDP/IP, HTTP
Power supply:
Supply voltage ................................... DC 6 to 30 V (with polarity reversal protection)
Power consumption ........................... usually 170 mA at 12 V
Other parameters:
Operation temperature....................... -20 C to +70 C
Dimensions ........................................ 104 mm × 55 mm × 24 mm
Dimensions incl. connectors .............. 121 mm × 55 mm × 24 mm
Dimensions incl. DIN rail holder......... 104 mm × 55 mm × 33 mm
Weight ............................................... 140 g
28
Calibration is described in greater detail in the communication protocol description which is available to be
downloaded from the device web page.
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Available Designs
Assembly:
 Without a holder (standard design)
 With a DIN rail holder
Input ranges:
 0 to 10 V
 0 to 20 mA
 4 to 20 mA
 It is possible to deliver another current or
voltage range upon request; it is also
possible to combine more ranges in one
device
Fig. 27 - AD4ETH with DIN rail holder
 With a wall holder
Fig. 28 – AD4 with wall holder
Do not hesitate to contact us in case of any other special requirements concerning the AD4ETH
module design and functions.
INDICATIONS
The device contains three light indicators showing the operational status:
ON
Green light. Lights when the supply voltage is connected.
COM
Yellow indicator. Blinks once after initialization sequence. Then it is flashing during the
communication over Ethernet and in WEB communication mode.
OVR
Red light. Flashes repeatedly when the input range of any channel has been exceeded.
Warning: When the channel is switched to “4 to 20 mA” range, AD4 indicates not only
exceeding the upper limit, but also value dropping below the lower limit if the current is lower
than 4 mA. It means that the drop is indicated also when no sensor is connected (because the
current is zero).
Page 44
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AD4ETH
HARD RESET
If you want to hard-reset the AD4, follow these instructions:
(When hard-resetting the device, all parameters are set into factory defaults, including the IP
address.)
1) Disconnect the power supply.
2) Push the button in a hole beside the Ethernet connector and hold it.
3) Turn the power on and wait for 10 seconds
4) Release the button.
5) Hard reset done.
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AD4ETH
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www.papouch.com
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AD4ETH
Page 47
AD4ETH
Papouch s.r.o.
Papouch s.r.o.
Data transmission in industry, line and protocol
conversions, RS232/485/422/USB/Ethernet/GPRS/
WiFi, measurement modules, intelligent
temperature sensors, I/O modules, and custommade electronic applications.
Address:
Strasnicka 3164
102 00 Prague 10
Czech Republic
Tel:
+420 267 314 267
+420 267 314 268
+420 602 379 954
Fax:
+420 267 314 269
Internet:
www.papouch.com
E-mail:
[email protected]
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