DEMO MANUAL DC2228A LTC2874 8-Port IO-Link Master Reference Design Description Demonstration circuit 2228A is a complete 8-port IO-Link® Master that uses two LTC®2874 IC’s to implement its IO-Link v1.1 physical interface (PHY). DC2228A operates either with an external supply VDD or a Power over Ethernet (PoE) system. The IO-Link stack protocol runs on an NXP microcontroller. A software Control Tool operates the DC2228A. Design files for this circuit board are available at http://www.linear.com/demo/DC2228A L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Hot Swap and LTPoE++ are trademarks of Linear Technology Corporation. IO-Link is a registered trademark of PROFIBUS Nutzerorganisation (PNO) e.V. All other trademarks are the property of their respective owners. Compatible with IO-Link Consortium as set forth by PROFIBUS PNO. Performance Summary Specifications are at TA = 25°C SYMBOL PARAMETER CONDITIONS VDD Input Supply Range J5; S1 in EXT Position 20 30 V ---- PoE Supply Range J1; S1 in PoE Position; LTPoE++ 90W 41 57 V VSM Supply Voltage for Devices 20 30 ISM Supply Current for Devices 200 ISIRM Current Pulse Capability for Devices V(L+) > 18V MIN TYP MAX UNITS V mA 500 mA Board Photo dc2228af 1 DEMO MANUAL DC2228A Quick Start Procedure The following hardware and software are required: • PC running WinXP or later with Ethernet or USB-toEthernet adapter • TEConcept Control Tool software. See Step 1. • 24V power supply or PoE power sourcing equipment (PoE injector or PoE switch). • One or more IO-Link devices, such as Linear Technology’s DC2227A. 4.Operate the DC2228A using the Control Tool software. Refer to the DC2228A Control Tool section for details. Briefly, the steps are: a. Start the Control Tool. b.Find the IP address assigned to the DC2228A by DHCP. c. Configure port devices using I/O Description (IODD) files. This procedure assumes a 24V power supply and a dynamic IP address assigned via DHCP. Operation using PoE or a fixed IP address is described elsewhere in this manual. d.Enter the DC2228A IP address (from Step a), then click the “Connect” button to connect the Control Tool software to the DC2228A (Figure 8). 1. Download and install the DC2228A Control Tool software from: www.linear.com/demo/DC2228A. f. Click “IO-Link” button to begin communication. 2.Hook-up (Figure 1): a. Set the power source selector (S1) to the EXT position. b.Keeping its output disabled, connect a 24V input power supply to J5. NOTE: Ensure that the input voltage does not exceed 30V. c. Connect an Ethernet cable between J1 and the network to which the PC is connected. d. Connect one or more IO-Link devices using the M12 connectors (J21–J28) and cables up to 20m in length. Refer to Table 1. 3.Turn on the 24V Power. 2 e. Click “Power ON” button to turn on device power. 5.Alternate configurations: a. For operation using a direct Ethernet connection not involving a LAN, refer to the Alternate Configuration for Fixed IP Address section and Figure 2. b. For Power over Ethernet (PoE) operation, refer to the Power over Ethernet section and Figures 3 and 4. 6.Reference material: a. Refer to the DC2227A Demo Manual for information and operating details if using this IO-Link device. 7.When finished, disable all ports (using the “Inactive” and “Power OFF” buttons) and disconnect the Control Tool (using the “Disconnect” button). Then, turn off the power supply or PoE source. dc2228af DEMO MANUAL DC2228A Quick Start Procedure LOCAL AREA NETWORK * * 24V 4A PC RUNNING DC2228A CONTROL TOOL + – * ETHERNET CABLES PORT 2 PORT 4 CABLES TO DEVICES (0 TO 20m) (USE 'EXT' SWITCH SETTING) Figure 1. Set-Up Using Power Supply and DHCP 24V 4A – + PC RUNNING DC2228A CONTROL TOOL ETHERNET CABLE PORT 2 PORT 4 CABLES TO DEVICES (0 TO 20m) (USE 'EXT' SWITCH SETTING) Figure 2. Alternate Set-Up Using Power Supply and Direct Ethernet Connection dc2228af 3 DEMO MANUAL DC2228A Operating Information Overview Connectors The DC2228A implements a complete IO-Link Master for eight ports. Two LTC2874 quad-master IC’s provide power and signaling for the physical interface (PHY). The IO-Link stack protocol runs on one core of a dual-core NXP LPC43 microcontroller. The other core runs an Ethernet port for connecting to a PC running a control program. J1: Ethernet jack LTPoE++™ Power over Ethernet system supports A 90W alternative power from sourcing equipment such as a PoE injector or PoE switch. The LTPoE++ circuits use an LT4321 ideal diode bridge and an LT4275 PD controller, and feed into an isolated flyback converter controlled by an LT3748. J5: External 24V power J16: JTAG programming interface for NXP LPC43 microcontroller. Factory use only. J18: JTAG programming interface for Atmel SAM4 microcontroller. Factory use only. J21 to J28: M12 connectors for IO-Link cables. Although these are 5-pin connectors, the DC2228A PHY uses only 3 pins per port. Table 1. Connector vs. Port Four IO-Link ports connect directly to the LPC43’s builtin UARTs, while the remaining four use a port expander application run by an Atmel SAM4N MCU. Supporting functional blocks include a step-down switching regulator that uses an LT3682 to produce a regulated 3.3V supply for both microcontrollers, and a temperature sensor made with an LTC2997. Compatibility The DC2228A and Control Tool software will operate any device compliant with IEC 61131-9 Single-Drop Communication Interface (SDCI), commonly known as IO-Link. Switch and Button Controls S1: Power Source Selector. Selects between external 24V (switch up) and PoE (switch down) sources. SW1 (RESET): Resets the NXP microcontroller and Ethernet connection. SW2 (IP): Sets the current IP address as the default. PORT CONNECTOR 1 J25 2 J21 3 J26 4 J22 5 J27 6 J23 7 J28 8 J24 Table 2. M12 Connector Pins PIN NUMBER PIN NAME 1 L+ 2 N/C 3 L– (GND) 4 C/Q 5 N/C 1 2 5 4 3 Jumpers J41: PoE Classification resistor selector. Selects 49.9Ω RCLASS resistor. See Table 5. Default shunt. J42: LTPoE++ Classification resistor selector. Selects 118Ω RCLASS++ resistor. See Table 5. Default shunt. J103: JTAG source selector for SAM4N. Factory use only. Default position 2–3 (GND). 4 dc2228af DEMO MANUAL DC2228A Operating Information Status Indicators switch input and the PC running the Control Tool software. Top LED Because the DC2228A is nominally classified as a 90W LTPoE++ PD (Powered Device), it requires a PSE rated at this power level for unrestricted operation. Table 3. LED0 (Ethernet Link/Active) STATE DESCRIPTION Off No link Green Link Blinking Green Activity Limited operation with a PSE rated for less power is possible, but the classification must be changed using Table 5. For example, to operate using a 13W PoE injector, remove the J42 shunt (keeping the J41 shunt in place) and restrict the total power consumption accordingly. Bottom LED A PSE rating below 90W might easily be adequate, depending on the actual power consumed by devices connected to eight ports. This consideration must take into account whether the C/Q lines will drive DC loads (e.g., in SIO mode) or only connect with IO-Link devices. Table 4. LED1 (Ethernet Link Speed) STATE DESCRIPTION Off 10 Mbps Green 100 Mbps For additional guidance regarding PoE classification settings, refer to the LT4275 data sheet. Power over Ethernet (PoE) The DC2228A optionally operates using power supplied over an Ethernet connection, eliminating the need for a local power supply. To use this mode: a. Set the power source selector (S1) to the PoE position. b.Connect a PoE injector (Figure 3), PoE switch, or other Power Sourcing Equipment capable of 90W (for example, an LTPoE++ demo board, DC1814A-D) to its power adapter or supply. c.Connect an Ethernet cable between J1 and the PoE injector/switch output. d.Connect an Ethernet cable between the PoE injector/ Figure 3. 90W LTPoE++ Injector (Allnet ALL048900) Table 5. Classification Resistor Programming RCLASS J40 34.8Ω RCLASS++ J41 49.9Ω J42 118Ω J43 34.8Ω CLASS PD Type NOMINAL ICLASS PD POWER AVAILABLE ---- Open Open ---- 0 Type 1 0.4mA 13W ---- Shunt Open ---- 3 Type 1 28mA 13W ---- Open Shunt ---- ---- Invalid ---- ---- Shunt* Open Open ---- 4 40mA 25.5W ---- Open Open Shunt* 4** Type 2 LTPoE++ 40mA 38.7W 4** LTPoE++ 40mA 90W ---- Shunt Shunt ---- NOTE Default *Jumper not provided. Requires addition of 2-pin header to PC board. **LTPoE++ PD will be classified as Class 4 Type 2 by an IEEE 802.3 compliant PSE. dc2228af 5 DEMO MANUAL DC2228A Operating Information TVS Protection The C/Q and L+ pins are protected by 36V TVS diodes. Do not connect to any voltage higher than 30V. Thermal Protection If the DC2228A board temperature reaches 80°C, the Control Tool software reports a “TEMP-FAULT” and disables operation. The thermal sensor Q19 is located underneath flyback transformer T1. L+ Diode Isolation If L+ isolation is desired, remove 0Ω resistors R158 to R165 which normally shunt Schottky diodes D28 to D35. Demonstration Board Options The DC2228A reference design demonstrates LTC2874 operating in an 8-port IO-Link master system. Its two LTC2874 IC’s operate under the control of the IO-Link v1.1 protocol stack coded in microcontroller firmware. Control Tool software provides access to a limited set of LTC2874 features but is oriented toward operating IO-Link devices that connect to the DC2228A ports. The default internal register settings for the on-board LTC2874 IC’s are listed in Table 6. 6 Another demonstration board, DC1880A, provides access to all LTC2874 features and more direct access to its SPI register. Table 6. DC2228A Default Settings for LTC2874 R/W Registers Register Address Register Name Default Value Register Address Register Name Default Value 0x1 IRQMASK 0x2 EVENT1 0x96 0x9 MODE2 0x04 0x00 0xA NSF 0xFF 0x3 EVENT2 0x00 0xB ILLM 0xFF 0x4 EVENT3 0x00 0xC TMRCTRL 0xD2 0x5 EVENT4 0x00 0xD CTRL1 0x00 0x8 MODE1 0x80 0xE CTRL2 0x00 Companion IO-Link Device DC2227A While the DC2228A and Control Tool software will operate any IO-Link sensor, the example screen shots given in this manual use the DC2227A IO-Link Device with Multiple Sensors. The DC2227A is a complete IO-Link Device incorporating the LT3669-2 along with a temperature sensor, light sensor, pushbutton, and an incandescent lamp. IO-Link Firmware The firmware contained in the NXP microcontroller is intellectual property owned by TEConcept Gmbh in Germany. Any attempt to copy, transfer, or reverse engineer the firmware is forbidden. The source code or an object library for the IO-Link stack can be licensed from TEConcept. dc2228af DEMO MANUAL DC2228A Operating Information LOCAL AREA NETWORK * * 56V 2A + + – – 90W PoE PSE IN * OUT ETHERNET CABLES PC RUNNING DC2228A CONTROL TOOL * PORT 2 PORT 4 CABLES TO DEVICES (0 TO 20m) (USE 'PoE' SWITCH SETTING) Figure 4. Set-Up Using PoE and DHCP * 56V 2A + + – – 90W PoE PSE IN PC RUNNING DC2228A CONTROL TOOL OUT * * ETHERNET CABLES PORT 2 PORT 4 CABLES TO DEVICES (0 TO 20m) (USE 'PoE' SWITCH SETTING) Figure 5. Alternate Set-Up Using PoE and Direct Ethernet Connection dc2228af 7 DEMO MANUAL DC2228A DC2228A Control Tool Overview The DC2228A Control Tool configures and operates the 8-port IO-Link Master via an Ethernet connection. It controls and monitors the status of each port, while also providing access to the parametric register data within each connected IO-Link device. The Control Tool supports DHCP for dynamic IP address assignments, or can operate using a fixed IP address. Along with some navigation aids, the main window is shown in Figure 6. Installation Download the software from www.linear.com/demo/ DC2228A and follow the on-screen instructions. IO-Link Device Configuration For any port that will operate an IO-Link device, load the device’s IO Device Description, or IODD, file (Figure 7): 3.Apply power from either a 24V power supply or PoE power sourcing equipment. 4.Start the Control Tool software. 5. Find the IP address assigned to the DC2228A as follows: a. Open a Command Window. b.Get the PC IPv4 address returned by: ipconfig c. In the Control Tool, run Master settings → Find. Set the IP address range to span the subnet that includes the PC’s IP address from Step 5b; then click the “Search” button. d. When the utility finishes running, note the IP address listed following “IO-Link Master connected on address:” 6.Enter the DC2228A communication settings (Figures 8a and 8b): 1.Click “Select device” button. IP address = {from step 5} Port = 7 2.If IODD file isn’t already listed, click “Import” button, select the {IODD}.xml file, and then click “Open.” 7.Connect the Control Tool to the DC2228A using the green “Connect” button (Figure 8c and 8d). 3.Highlight the IODD file to be assigned and click the “Select device” button. NOTE: to re-enable DHCP behavior after using the DC2228A with a fixed IP address, use the procedure given in the section One-Time DC2228A configuration to Restore DHCP Behavior after using a Fixed IP Address. Normal Configuration for Network Connection using DHCP Normally, the Control Tool connects with the DC2228A via Ethernet connections to a local area network (LAN), in which case network-assigned IP addresses are usually expected. To configure for dynamic IP address assignment by DHCP, both the PC and the DC2228A must each be configured for this mode. However, for the PC, this is usually already the case, and it’s also the default mode for the DC2228A. 1.Connect Ethernet cables per Figure 1 (if using a power supply) or Figure 4 (if using PoE). 2. As needed, set the PC settings per the section Configuring a PC to Operate with DHCP-Assigned IP Address. 8 Alternate Configuration for Fixed IP Address To use a fixed IP address, first configure both the PC and the DC2228A for this mode: 1. Connect Ethernet cables according to Figure 2 (if using a power supply) or Figure 5 (if using PoE). 2.Configure the PC to operate with a fixed IP address using the procedure given in the section Configuring a PC to Operate with Fixed IP Addresses. 3.Configure the DC2228A to operate with a fixed IP address using the procedure given in the section OneTime DC2228A Configuration to Use a Fixed IP Address Instead of DHCP. dc2228af DEMO MANUAL DC2228A DC2228A Control Tool 4.Apply power from either a 24V power supply or PoE power sourcing equipment. 5.Start the Control Tool software. 6. Enter the DC2228A communication settings (Figure 8a and 8b). Using the default address: IP address = 192.168.10.150 Port = 7 NOTE: The default IP address can be changed using the procedure given in the section One Time DC2228A configuration to change the fixed IP address. 7.Connect the Control Tool to the DC2228A using the green “Connect” button (Figure 8c and 8d). IO-Link Operation To operate a connected device that’s been configured for IO-Link operation (Figure 9): 1.Click the “Power ON” button to supply power to the device. 5. Click the “Inactive” and “Power OFF” buttons when done. Digital Output Operation To operate in DO mode (Figure 11), for switching the C/Q line as a Standard IO (SIO) output: 1.If an IODD file has been associated with the port, remove it using Select device → Exit and not select. When powered, the connected device will now run in Standard IO (SIO) mode. 2.Consider whether the connected device will tolerate a C/Q driver conflict. If conflicts occur, master C/Q overcurrent events could be triggered (see Fault Conditions section). If connected to a DC2227A, be aware that the device output state in SIO mode is determined by its light sensor. The DC2228A and DC2227A won’t damage each other. Other devices could be stronger or weaker than the DC2228A, and might not tolerate a conflict. 3. Click the “Power ON” button to supply power to the device. 2.Click the “IO-Link” button to begin communication. 4.Click the “DO” button and “OK” the confirmation message. 3. Operate IO-Link device. For a typical sensor this involves monitoring process data and events. 5.Click the “High” or “Low” radio buttons to switch the C/Q state. 4.Click the “Inactive” and “Power OFF” buttons when done. 6.Click the “Inactive” and “Power OFF” buttons when done. Digital Input Operation Fault Conditions To operate in DI mode (Figure 10), for receiving data from a device connected to the C/Q line: If the Control Tool detects a fault on any port, it reports, in red, a Master PHY event at the bottom of the main window. The operator may query faults using the Master settings → Check PHY events pull-down menu. After fixing the underlying condition, the operator may clear faults using the same pull-down menu. 1.If an IODD file has been associated with the port, remove it using Select device → Exit and not select. When powered, the connected device will now run in Standard IO (SIO) mode. 2. Click the “Power ON” button to supply power to the device. Software License and Renewal 3.Click the “DI” button. The Raw Process Data In field will monitor the digital state at the C/Q pin. The Control Tool license is valid for 10000 minutes of cumulative operation. Unlimited free renewals, as well as an unlimited license, are available. To renew the license: 4.In the case of a DC2227A device, the C/Q state can be changed by interacting with its light sensor. 1. Get the hardware ID using Tools → License key manager and clicking the “Export hardware ID” button. dc2228af 9 DEMO MANUAL DC2228A DC2228A Control Tool 2.Send the hardware ID and request for free license renewal to TEConcept GmbH using this address and subject line: 4.Again using Tools → License key manager, enter the new key. For Period, enter “10000”. Then click the “Send” button and close the window. To: [email protected] Subject: DC2228A license renewal request 5.Re-open the license manager and check that the “Remaining time” has been reset. 3.Receive the new license key by email. A C E J D F G B H I K DC2228A F06 (A) Control Tool connection controls (G) Connected device state and speed (B) Control Tool connection status (H) Light bulb controls and status (C) Port selector (I) Process data (D) Port status (J) Device parameters (E) Device selector and device parameters (K) Firmware version (F) Device configuration controls Figure 6. Control Tool Main Window 10 dc2228af DEMO MANUAL DC2228A DC2228A Control Tool (a) (c) DC2228A F06 (b) DC2228A F07 Figure 7. Selecting a Device IODD (IO Description Data) File dc2228af 11 DEMO MANUAL DC2228A DC2228A Control Tool (a) (b) (c) (d) DC2228A F08 Figure 8. Connecting the Control Tool to DC2228A 12 dc2228af DEMO MANUAL DC2228A DC2228A Control Tool (a) (b) DC2228A F09 Figure 9. IO-Link Operation dc2228af 13 DEMO MANUAL DC2228A DC2228A Control Tool (a) (b) DC2228A F10 Figure 10. Digital Input (DI) Mode 14 dc2228af DEMO MANUAL DC2228A DC2228A Control Tool (a) (b) DC2228A F11 Figure 11. Digital Output (DO) Mode dc2228af 15 DEMO MANUAL DC2228A Additional Information Configuring a PC to Operate with DHCP-Assigned IP Address One-Time DC2228A Configuration to Use a Fixed IP Address Instead of DHCP: For a PC running Windows 7: The DC2228A comes preconfigured for DHCP operation. To operate using a fixed IP address for the first time: a. Open the adapter settings for the LAN adapter: Control Panel → Network and Internet → Network and Sharing Center → Change adapter settings a. While powered up, press the SW1 (RESET) and SW2 (IP) buttons on DC2228A at the same time. b. Right click the appropriate adapter and select “Properties.” b.Release the RESET button first. c. Highlight “Internet Protocol Version 4 (TCP/IPv4),” then click the “Properties” button. c. Release the IP button. d.Select “Obtain an IP address automatically.” d.If the Control Tool is connected, click the “Disconnect” button. (Refer to “A” in Figure 6.) e. “OK” or “Close” all windows. e. Cycle the power or press the RESET button. A PC connected to a LAN likely already uses DHCP. The DC2228A will now operate in fixed IP address mode using the default address 192.168.10.150. Configuring a PC to Operate with Fixed IP Addresses For a PC running Windows 7: Steps a through c: same as above d. Select “Use the following IP address” and configure as follows. For “X”, use an integer such as 2 and don’t use the address assigned to the DC2228A (default = 150). IP address: 192.168.10.X Subnet mask: 255.255.255.0 Default gateway: {leave blank} e. “OK” or “Close” all windows. One-Time DC2228A Configuration to Change the Fixed IP Address: a.While powered up and connected to the Control Tool, select Master settings → Set network address → Use fixed IP address. b.Enter the new address, then click the “Set”” button. c. Cycle the power or press the SW1 (RESET) button. The DC2228A will use this address when operating in fixed IP address mode. One-Time DC2228A Configuration to Restore DHCP Behavior after Using a Fixed IP Address a.While powered up and connected to the Control Tool, select Master settings → Set network address → Get the address from DHCP server. b.Click the “Set” button. c. Click the “Disconnect” button. d.Cycle the power or press the SW1 (RESET) button. The DC2228A will now operate in DHCP mode. 16 dc2228af DEMO MANUAL DC2228A Troubleshooting Guide PROBLEM No Ethernet connection (LED0 not blinking) SOLUTION a. Check Ethernet cable connection. b.Check 24V power supply to green connector (if source selector S1 in up position). c. Check power adapter connection to PoE power sourcing equipment (if S1 in down position). d. If using PoE, check PD classification settings against PSE rating. Adjust J41/J42 settings as needed (see Table 5). DHCP worked previously, but the Control Tool no longer connects in a subsequent session A new IP address might have been assigned to the DC2228A by the DHCP server. In the Control Tool, run Master settings → Find to confirm the address. Refer to the Normal Configuration for Network Connection using DHCP section for details. Error message “Can’t connect to the IO-Link Master” or “Can’t Open the port!” b. Check IP address settings for PC and DC2228A. Missing power to connected device a. Check device cable connection. a.If LED0 isn’t blinking, refer to above issue. b. Check that Control Tool port number matches actual port. c. Click “Power ON” button. Missing DI or DO button Remove the IODD file association via: Select device → Exit and not select COMLOST fault when attempting IO-Link connection a. Check device cable connection. b. Check that Control Tool port number matches actual port. c. Click “Power ON” button if device lacks power. d. Check that correct IODD has been loaded and Device Parameters entries are valid. COMPFAULT a. Remove IODD selection, then check whether “Inspection level” setting was inadvertently changed. Normally it should be set to NO CHECK. When done, reselect IODD. b. Check health of connected device. TEMP-FAULT Refer to Thermal Protection section. a. Investigate source of PC board overheating (overload or environmental). b. Allow PC board to cool. c. Return each port to operation, beginning with port's “Power ON” button. Master PHY event Refer to Fault Conditions section. General misbehavior Press SW1 (RESET) button on DC2228A. This will require communication between the Control Tool and DC2228A to be re-established. Can’t “Select Device” to change IODD Select “Inactive” and “Power OFF” buttons first. Can’t find the IP addressed to the DC2228A Run Master settings → Find to find the IP address. Refer to the Normal Configuration for Network Connection using DHCP section for details. DHCP mode doesn’t work on a particular Local Area Network Work-Around: Use a direct Ethernet connection and a fixed IP address. To clear DHCP behavior, refer to One-Time DC2228A Configuration to Use a Fixed IP Address Instead of DHCP. License key fault (LICENSEKEYFAULT) Obtain free renewal of 10000 minute license. See Software License and Renewal section. dc2228af 17 DEMO MANUAL DC2228A Parts List The table below lists components that comprise both the IO-Link physical interface and an optional enclosure. The complete parts list is found here: www.linear.com/demo/DC2228A ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER IO-Link Physical Interface Components 20 14 C36, C39–41, C75–76, C99, C101, C103, C105, C107, C109, C111, C113 CAP, 1µF, 10%, 50V, X7R, 1206 TDK, C3216X7R1H105K160AB 21 1 C37 CAP, 220µF, 20%, 50V, 12H10 ELEC PANASONIC, EEE-FT1H221AP 23 8 C100, C102, C104, C106, CAP, 560pF, 5%, 100V, C0G, 0603 C108, C110, C112, C114 TDK, C1608C0G2A561J080AA 41 8 D28–35 DIODE, SCHOTTKY, SMA_2C FAIRCHILD, S100 43 16 D37–52 DIODE, TVS, 36V, SMB_2C STM, SM6T36A 50 8 J21–28 CONNECTOR, M12, 5 PIN PHOENIX, 1694237 64 8 Q11–18 XSTR, 100V N-CH MOSFET SOT-223 FAIRCHILD, FQT7N10LTF 95 8 R59–66 RES, 0.2Ω, 1%, 1206 SUSUMU, RL1632R-R200-F 96 2 R67–68 RES, 4.7k, 1%, 0402 VISHAY, CRCW04024K70FKED 97 8 R69–76 RES, 10Ω, 1%, 0603 VISHAY, CRCW060310R0FKEA 102 1 R107 RES, 1Ω, 1%, 0603 VISHAY, CRCW06031R00FKEA 123 2 U7–8 IC, QUAD IO-LINK MASTER LINEAR TECH, LTC2874IUHF Optional Enclosure 134 0 ---- HOUSING, BASE DIGI-KEY, 2200939-ND 135 0 ---- HOUSING, SIDE DIGI-KEY, 2200952-ND 136 0 ---- HOUSING, FRONT PLATE DIGI-KEY, 2200947-ND 137 0 ---- SHEET METAL SCREW, PAN PHILLIPS #6 18 dc2228af DEMO MANUAL DC2228A Schematic Diagram The schematic is found here: www.linear.com/demo/DC2228A Board Photo Reverse Side dc2228af Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. 19 DEMO MANUAL DC2228A DEMONSTRATION BOARD IMPORTANT NOTICE Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions: This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations. If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES. The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or agency certified (FCC, UL, CE, etc.). No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind. LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive. Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and observe good laboratory practice standards. Common sense is encouraged. This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC application engineer. Mailing Address: Linear Technology 1630 McCarthy Blvd. Milpitas, CA 95035 Copyright © 2004, Linear Technology Corporation 20 Linear Technology Corporation dc2228af LT 0415 • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com LINEAR TECHNOLOGY CORPORATION 2015