RS232 RADIO MODEM • • • • • • • • • • • • TYPHOON 800 Wireless half duplex radio modem RS232 serial interface RF power output 10mW Range up to 800m Radio baud rate up to 10kbps Serial baud rate up to 38.4kbp/s Housed in a tough ABS enclosure rated IP68 European 869.700 to 870.000 MHz operation Requires no radio licence to operate Powered from 9 to 12Vdc Internal LED indication of power and communications Configurable with standard Hayes AT commands Applications • • • • Wireless data logging CCTV control RS232 serial cable replacement Machine to machine data communications Description The RF Solutions typhoon RF modem provides fast and reliable wireless data communications at an exceptionally competitive price. Whilst the RF modem is simple to use it is also highly adaptable and can be used in a wide variety of applications. Antenna RS232 RF Modem The RF modem is configurable as a ‘transparent’ wireless serial point-to-point link, reproducing the function of a half duplex serial cable. An addressed secured mode is also supported. TX RX CTS RTS PWR Power Supply The RF modem can be configured to scan the radio link for activity and verify it is free before transmission thereby avoiding data collisions. Supplied in a tough IP68 rated ABS enclosure, with an RS232 cable and antenna, the RF modem requires only a 9 to 12Vdc (1A maximum) power supply to function. DS510-3 Jan 2011 ©2008 Reg. No. 227 4001, ENGLAND Page 1 RS232 RADIO MODEM TYPHOON 800 Contents Technical Specification ..................................................................................................................... 3 1.1 Functional description ........................................................................................................ 3 1.2 Functional Characteristics .................................................................................................. 3 1.2.1 General ....................................................................................................................... 3 1.2.2 Transmission ............................................................................................................... 3 1.2.3 Reception .................................................................................................................... 4 1.2.4 DC ............................................................................................................................... 4 1.3 Status LEDs ....................................................................................................................... 4 1.4 Power Supply ..................................................................................................................... 4 1.5 Host Interface ..................................................................................................................... 4 1.5.1 RS232 Serial Link ....................................................................................................... 5 1.5.2 RS232 Slew Rate........................................................................................................ 6 1.6 Antenna .............................................................................................................................. 6 1.7 Temperature Range ........................................................................................................... 6 1.8 Dimensions......................................................................................................................... 6 Software Specification ...................................................................................................................... 7 2 Quick Setup Guide ................................................................................................................. 7 Operating Modes .............................................................................................................................. 8 3 Hayes or ‘AT’ Mode ............................................................................................................... 8 3.1.1 Standard Commands Description ............................................................................... 8 3.2 Transparent Mode .............................................................................................................. 9 3.3 Addressed Secured mode.................................................................................................. 9 Register Definitions ........................................................................................................................ 11 4 Radio.................................................................................................................................... 11 4.1 RS-232/485 Serial Link .................................................................................................... 11 4.2 Operation.......................................................................................................................... 12 4.3 Network Control ............................................................................................................... 12 4.4 Radio Test Commands .................................................................................................... 13 Ordering Information ....................................................................................................................... 13 DS510-3 Jan 2011 ©2008 Reg. No. 227 4001, ENGLAND Page 2 RS232 RADIO MODEM TYPHOON 800 Technical Specification 1.1 Functional description The RF modem is configurable as a ‘transparent’ wireless serial point-to-point link, reproducing the function of a half duplex serial cable. An addressed secured mode is also supported. J4 RS232 POWER J5 The RF modem can be configured to scan the radio link for activity and verify it is free before transmission thereby avoiding data collisions. POWER TB3 All parameters of the serial connection and radio modem are fully configurable in software using the Hayes AT command set. Commands are entered via the serial port from a host using communications software (for example a PC and Microsoft Windows HyperTerminal). TB2 ANT1 RS232 TB1 LED1 RF Module The configuration parameters are described in section 2. LED4 RTS LED5 CTS LED2 RX LED3 TX LED6 PWR MDM500-868N 1.2 Functional Characteristics 1.2.1 General Specification Frequency band Modulation type Range (line-of-sight) MHz m Min Typical - 7 1 25 19,200 1 Output power 2 Channel number Channel spacing Radio data rate Default Baud Rate 2 869.700 to 870.000 - Transmission Specification 1 Units GFSK 800 ETSI 300 220 ERC-REC 70-03 Conformity testing/standard 1.2.2 Typical Max Units dBm 10 - kHz kbps bps Power delivered into the antenna Centre frequency 869.525MHz (single-channel), first channel 869.4125MHz (multi-channel) DS510-3 Jan 2011 ©2008 Reg. No. 227 4001, ENGLAND Page 3 RS232 RADIO MODEM 1.2.3 Reception Specification -3 Sensitivity for CER <10 Average CER -3 Saturation for CER <10 Selectivity 1.2.4 TYPHOON 800 Min Typical Max Units -98 - -100 -6 <1.10 36 -102 -10 - dBm dBm dB DC Specification Power supply Conditions Ripple <50mV Transmit (27dBm/500mW) Receive Current consumption Min 6.5V Typical 12V Max 13.2 Units V 30 33 36 mA 27 30 33 mA 1.3 Status LEDs The RF Modem has several LEDs that represent the status of the power supply and data and data transmissions as follows: • TX – On when transmitting data over the air • RX – On when receiving data over the air • CTS – On with Clear To Send • RTS – On with signal Ready To Send • PWR – On when the power supply is healthy 1.4 Power Supply The RF Modem is powered from a 9 to 12Vdc power supply which must be capable of providing current up to 1A. Connections are made using either TB3 or J5 as follows: Pin Connection 1 0V (ground) 2 0V (ground) TB3 1 3 9 to 12Vdc, 2 3 Pin Connection 5 0V (ground) 9 9 to 12Vdc, Cable entry 1A max POWER 1A max 1.5 Host Interface DS510-3 Jan 2011 ©2008 Reg. No. 227 4001, ENGLAND Page 4 RS232 RADIO MODEM 1.5.1 TYPHOON 800 RS232 Serial Link RS232 connections are made using both TB1 and TB2 or by inserting a DB9 plug into J5: Wire this end into the RF modem (TB1 and TB2) SCN RX TX GND RTS CTS Pin Name Description 1 GND 2 RTS 9-way d-type socket TB2 Pin 1 TB2 Pin 2 TB1 Pin 3 TB1 Pin 1 TB1 PIN2 TB2 PIN3 RX TX GND RTS CTS Pin Name Description Ground, 0 Vdc 1 GND Ground, 0 Vdc Request to send. 2 RX Receive data. TB1 From the host 1 2 3 To the host Cable entry 3 TX Transmit data. Description Additional Detail 2 RX Receive data To the host 3 TX Transmit data From the host 5 GND Ground 0V 7 RTS Request to send From the host 8 CTS Clear to send To the host DS510-3 Jan 2011 CTS Clear to send. To the host Name TB2 1 2 3 Cable entry 3 From the host Pin Pin 2 Pin 3 Pin 5 Pin 7 Pin 8 ©2008 Reg. No. 227 4001, ENGLAND Page 5 RS232 RADIO MODEM 1.5.2 TYPHOON 800 RS232 Slew Rate When using the RF modem in a noisy environment it may beneficial to limit the slew rate of the RS232 interface to improve the noise immunity of the wired link. J4, 5-6 Operation Jumper link Fitted Limit Slew Rate Not Fitted Normal Operation The slew rate is set by a jumper on pins 5-6 of J4. 2 4 6 J4 1 3 5 1.6 Antenna The RF modem is supplied with an 868MHz ¼ wave whip antenna that has been carefully matched to 3 the impedance of the RF modem’s power amplifier . 1.7 Temperature Range Storage temperature: ˚ ˚ ˚ ˚ -40 C to +85 C 4 Operating temperature : -10 C to +55 C 1.8 Dimensions The RF modem is supplied in an IP68 rated enclosure having the following dimensions. 5 Enclosure dimensions : Height 144mm Width 168mm Depth 85mm PCB dimensions: 125mm x 90mm x 1.6mm 3 It is the user’s responsibility to ensure that an external antenna if added does not affect this products suitability to operate within the 868MHz ISM band to the relevant standards 4 Operation at maximum ratings for extended periods may affect the reliability of this product 5 All dimensions are approximate and exclude the antenna and any fixings DS510-3 Jan 2011 ©2008 Reg. No. 227 4001, ENGLAND Page 6 RS232 RADIO MODEM TYPHOON 800 Software Specification 2 Quick Setup Guide The RF modem is supplied with its registers set to their default values. Using the default settings it can quickly and easily be used, from a PC running the Microsoft Windows operating system, to establish a simple transparent point-to-point link. The bundled MTC workbench software can be used by following the steps outlined below. 1. Install the MTC workbench software, supplied on the bundled CD onto your PC. 2. Connect your modem to the COM port of your PC using the supplied RS232 cable, apply power to the modem and load the MTC workbench software. The PWR and RTS LEDs will now be on. 3. When prompted to launch auto-configuration select ‘No’. 4. In the Settings menu change the user level to advanced. From the Modem menu Serial port configuration and select 19,000bps. 5. From the Tools menu select Terminal and open a terminal window on the COM port connected to the modem. You can now type text into the terminal window, if the Port is opened (By pressing the ‘Open Port’ button) then the text data will be sent over the serial link to the modem, as shown opposite. 6. Repeat steps 1-5 using either another PC or a different COM port on the same PC. 7. If the configuration settings are the same for both modems then you should now be able to wirelessly send text from one COM port to the other. Notes For full instructions on the use of the MTC workbench software please refer the manual provided on the CD bundled with the modems. The modems configuration settings can be changed by double clicking on the modem name, ‘B868-tiny’ under the COM port in the tree window. Once you have changed the settings to those which you require they can be propagated through to the modems registers by clicking on the Apply button. You can also change the configuration settings by entering AT commands into the terminal window in MTC workbench. Please refer to the sections for a description of the AT commands available. DS510-3 Jan 2011 ©2008 Reg. No. 227 4001, ENGLAND Page 7 RS232 RADIO MODEM TYPHOON 800 Operating Modes The RF modem is able to operate in several different modes which can be configured by setting the values of the appropriate special registers using AT commands. 3 Hayes or ‘AT’ Mode The Hayes or 'AT' commands comply with the Hayes protocol used in PSTN modem standards. This ‘AT’ protocol or Hayes mode is used to program the modem parameters, based on the following principle: A data frame always begins with the 2 ASCII ’AT’ characters, standing for ‘ATtention’ Commands are coded over one or several characters and may include additional data A command is always ended by a <CR> Carriage Return • • • A T Command Additional command ... <CR> Note 1: The delay between 2 characters of the same command must be less than 10 seconds The only exception to this data-framing rule is the command to enter the enter AT-mode. In this case, only the escape code (‘+++’ by default) must be typed and followed by a silent time at least equal to the time out. <AT> and <CR> shall not be used. Note 2: Register numbers and values used in the AT commands are in decimal format Note 3: Generally a successful AT command will return 0 or OK and an unsuccessful command will return ERROR or E 3.1.1 Standard Commands Description '+++' Enter AT-mode This command gives an instant access to the modem parameter set-up (Hayes or ATmode), whatever the actual operating mode in process might be. This command shall not be started with AT, but by a silent time duration whose parameter entering is defined in milliseconds in register S214. Note: By activating the AT-mode, the modem inactivates radio reception ‘ATO’ Exit AT-mode This command activates the operating mode as stored into register S220 'ATSn?' Display value of register ‘n’ The modem operating parameters are stored in ‘S’ classified registers. ‘S’ registers are numbered from 0 to 512. Some parameters are standard for every Hayes type modems, other are specific to the RF modem (see section 2.9 for register descriptions). Operating parameters are stored in EEPROM memory and automatically set-up during modem reset and modem turn on 'ATSn=m’ Change value of register ‘n’ to ‘m’ Changed values of registers are automatically stored in the modem EEPROM memory 'AT/S’ Display values of significant registers All significant registers for the modem (radio configuration, serial configuration, operating mode,) are sent to the serial link, ready to be displayed by software like Windows HyperTerminal 'AT/V’: Display values of the modem software version Information concerning the version number and installation date is sent on the serial link DS510-3 Jan 2011 ©2008 Reg. No. 227 4001, ENGLAND Page 8 RS232 RADIO MODEM TYPHOON 800 'ATR’: Hayes registers reset to default values This command allows the user to reset ALL the stored EEPROM registers to their default values (see section 2.9 for register descriptions) 'ATP’: Switch to Stand-by mode This command allows the user to switch to stand-by mode. The modem is in normal mode by default. The modem switches back to normal node with a character reception from the serial link 3.2 Transparent Mode This is the default operating mode. Data is transferred transparently, without encapsulation, flow control or addressing. I.e. all data sent onto the serial port by the host is transmitted across the radio link by the RF modem and will be intercepted by any similarly configured modems. In this mode the RF modem appears as a wireless serial point-to-point link, reproducing the function of a 6 half duplex serial cable . It can also be configured to scan the radio link for activity and verify it is free before transmission (listen before talk) thereby avoiding data collisions. 3.3 Addressed Secured mode This is a simplified multipoint network protocol where a network of modems allows one modem to communicate with any other. All data transfers are encapsulated, addressed and have flow control (i.e. frames are checked using CRC then acknowledged). This mode’s purpose is to offer optimal radio link quality with secure data transfer and as such includes an address field so that it is possible to address a particular modem within a network. Key points are as follows: • • • • • • Data transmissions are fully «data verified» The modem acts as in transparent mode, adding frame encapsulation Each modem has an address Identification of a particular modem is enabled by adding that modems “address” at the beginning of each data frame Maximum number of modems per network = 255 Maximum number of networks = 255 Example: "1=Hello" sends the data frame "Hello" to modem with address 1 • The modem with address ‘1’ recognises the client transmitting modem by the number starting the data frame. DS510-3 Jan 2011 ©2008 Reg. No. 227 4001, ENGLAND Page 9 RS232 RADIO MODEM TYPHOON 800 Example: "002=Hello" indicates that data frame "Hello" comes from Client No.2. o • You can add one frame ending character: Carriage Return<CR>, after each received frame. This in order to distinguish each frame. Example: "002=145<CR> 003=187<CR>" indicates data frame "145" comes from Client No.2, and data frame "187" comes from Client No.3. • No server, each client can communicate with each other. • Maximum of clients per network = 255, maximum of networks = 255. In this mode the RF modem can be configured to scan the radio link for activity and verify it is free before transmission (listen before talk) thereby avoiding data collisions. DS510-3 Jan 2011 ©2008 Reg. No. 227 4001, ENGLAND Page 10 RS232 RADIO MODEM TYPHOON 800 Register Definitions The RF modem offers several possible configurations using a set of parameters. The parameters are stored in registers and have default values. The values can be modified from the default or interrogated using Hayes commands. The registers are implemented in EEPROM and can therefore be modified more than 10,000 times The registers are listed below with default values shown in bold: 4 Radio Access Radio 4.1 Register Name R/W S200 Channel R/W S200 Carrier Length Description Used to indicate the current radio channel. As B868-tiny is a single channel module, the register is only present for compatibility with B868MC-Tiny units. Default : 0 Indicates the radio carrier length in milliseconds. This carrier is sent before each data frame and is used to Synchronize the receiver. Between 4 and 50 mS. Default : 15 ms RS-232/485 Serial Link Access Register Communications Name R/W S210 Serial Speed R/W S211 Data Bits R/W S212 Parity R/W S213 Stop Bits R/W S214 Serial Timeout R/W S216 Flow Control R/W S218 Buffer Size DS510-3 Jan 2011 Description Serial Connection Baud Rate : • 3 4800 • 4 9600 • 5 19200 • 6 38400 Serial Link Data Bits : • 7 bits • 8 bits (default) Serial Link Parity Type: • 1 None (default) • 2 Even • 3 Odd Serial Link Stop Bits : • 1 bit (default) • 2 bits Indicates the value of the time-out on the serial link. The time out value must be compatible with the serial speed Between 2 and 100 milliseconds Default : 5 Indicates flow control type: • 0 Hardware: CTS/RTS • 2 None (default) Indicates the maximum frames size that will be given to the Modem. When this size is reached, the modem resets the RTS signal. Between 30 and 240 Default : 230 ©2008 Reg. No. 227 4001, ENGLAND Page 11 RS232 RADIO MODEM 4.2 Operation Access Register Operation Mode 4.3 TYPHOON 800 Name R/W S220 Function Mode R/W S221 Auto-Repeat R/W S223 Number of Retries Description Operation Mode of the Modem. • 1= Transparent (Default) • 9= Addressed Secured Indicates Auto Repeat Status: • 0= Auto-Repeat Off (Default) • 1= Auto Repeat On Maximum recoveries count in case of problems in non Transparent (Non-Ack response to a message) mode. If this Register is at 0, the frames are not checked and considered as still good (used for the tests). Included between 0 and 255 Default: 2 Network Control Access Register Name Addressed Secured Mode R/W S252 Client Number R/W S256 Default Addressee DS510-3 Jan 2011 Description Indicates the modems receive Address. Between 0 and 255 Default: 0 Indicates the default address to which every radio frame will be sent. Default: 0 (inactive) ©2008 Reg. No. 227 4001, ENGLAND Page 12 RS232 RADIO MODEM TYPHOON 800 4.4 Radio Test Commands These AT commands are provided to enable measurements during continuous transmission to be taken and are primarily used during radio tests (radiated power, bandwidth, etc.) to show conformance to the ETS 300 220 standard. A test that is in progress will terminate if the modem receives a character from the • ATT0 <CR>: Transmit pure carrier at centre frequency • ATT1 <CR>: Transmit pure carrier representing ‘1’ • ATT2 <CR>: Transmit pure carrier representing ‘0’ • ATT3 <CR>: Transmit modulated carrier at maximum • ATT6 <CR>: Transmit modulated carrier at minimum Notes • After entering an AT command (ended by <CR>), the modem acknowledges it by returning a code which is either "O", or "E". O = OK E=Error • The commands are effective after a maximum delay of 10 ms. A new command can be entered after the current command has been acknowledged by the modem Ordering Information Part Number TYPHOON-800 PSU-12V1AIN-IP Description RF modem, 800 Metre, RS232, IP68 enclosure Power supply, 240Vac/12Vdc/1A, wall mount, 3-pin IEC mains plug For more information or general enquiries, please contact R. F. Solutions Ltd., Unit 21, Cliffe Industrial Estate, South Street, Lewes, E Sussex, BN8 6JL. England Tel +44 (0)1273 898 000 Fax +44 (0)1273 480 661 Email [email protected] DS510-3 Jan 2011 ©2008 Reg. No. 227 4001, ENGLAND http://www.rfsolutions.co.uk Page 13