ICS Regent®
Contents
1. Communications Port Connections Each communications port has a DB 25 female connector on the front of the module The RS232 and RS422 485 signals are internally connected to the DB 25 connector pins as shown in Table 1 Refer to Figures 3 through 5 for recommended communications cable requirements and connections Table 1 Communications Port Pin out Pin No RS232 RS422 485 Signal Signal 2 TX not used 3 RX not used 7 GND GND 9 not used 5 VDC 10 not used TX 11 not used RX 22 not used TX 23 not used RX Recommended Cable Type For multidrop and Guarded Peer Link communications a Belden cable type 813x where x number of pairs is recommended The cable has the following characteristics that are important 120 Ohm Characteristic Impedance Twisted Pairs Overall shield Communications Configurations The communications module supports a variety of communications configurations which are shown in Figures 3 through 5 Figure 3 illustrates two point to point Industrial Control Services P Communications Modules T3150A I configurations one using RS232 connections for short distances and the other using RS422 connections for longer distances Figure 4 illustrates multidrop connections between 2 or more Regents and a PC or other communications device supporting Regent R2 or Modbus protocols Figure 5 illustrates multidrop connections between 2 or more Regents using the Guar2. 7 Figure 7 RS422 485 Internal Signal Resistors To change the jumper settings the communications module must be removed from the controller chassis and disassembled 14 Industrial Control Services PD P Communications Modules T3150A Module Removal and Disassembly Using a small slotted screwdriver loosen the retaining screw near the top of the communications module Pull open both removal levers on the front of the module The module will disengage from the controller chassis When it is disengaged carefully slide the module out of the controller chassis With the module removed use a 2 Phillips screwdriver to remove the two screws from the left side of the module Remove the four Phillips screws from the right side of the module see Figure 8 Remove only those screw indicated in Figure 8 o g T3150A RS232 RS422 Communication LE i vv CAUTION Remove Remove two screws four screws this side this side of module of module Left Side Right Side Figure 8 Communications Module Disassembly After removing the screws separate the printed circuit board from it protective metal frame PD 6002 Mar 06 15 16 Communications Modules T3150A Note Refer to Table 2 to identify the proper jumper settings for your application s communications configuration Position the jumpers as needed
3. on the module Figure 9 shows the locations of the jumpers on board the module When shipped from the factory no jumpers are installed on E1381 E132 E133 E231 E232 and E233 For multidrop configurations you will need two jumpers for each port such as E131 and E133 for port 1 The default factory settings include jumpers positioned at E104 E106 E114 E116 E124 E126 E204 E206 E214 E216 E224 and E226 These jumpers connect termination pull up and pull down resistors for the CTS and DSR signal pairs for port 1 and 2 Since the CTS and DSR signals are not actually used by the module you can remove jumpers installed at any of these positions in order to install them as needed for E131 E132 E133 E231 E232 or E233 Industrial Control Services I P Communications Modules T3150A SEE Port 1 RRR Jumpers SERRES aoe i El FAs age Port 2 Jumpers GE BSE SERRES BERERE Figure 9 Jumper Locations Module Assembly and Installation Position the printed circuit board on the metal frame guiding the two 96 pin DIN connectors through the slots in the frame PD 6002 Mar 06 17 18 Communications Modules T3150A From the right side of the module align the four holes in the printed circuit board wit four metal standoffs Insert and tighte
4. top of the module Fastening the retaining screw will also help ensure that top switched release lever remains in position Industrial Control Services I P Communications Modules T3150A Maintenance No periodic maintenance or calibration is required for the digital input modules There are no user replaceable parts inside these modules Failed modules can be hot replaced Ifthe module being replaced has been configured to support multidrop connections be sure to check the jumper settings and properly configure the new module s jumpers before installing it Safety Considerations Communications modules are T V certified for Risk Class 5 safety applications as non interfering and can be used in a safety system for normal data acquisition functions Communications modules are approved for peer to peer communications of safety critical data between two or more Regent systems in Risk Class 5 safety applications This requires the use of redundant Guarded Peer Link communications networks where the network connections are made on redundant communications modules at each Regent For additional safety considerations involving communications with the Regent refer to the Safety Considerations Section of the Regent User s Manual PD 6002 Mar 06 19 PD Communications Modules T3150A Specifications Power Requirements Number of Serial Ports Serial Port Types Baud Rates Communications P
5. ated data is voted by the communications modules and sent to the dual UART where it is then transmitted out the associated port The communications modules two serial ports operate independently and can both be configured differently Electrical configuration is done by changing jumper settings to select point to point or multidrop configurations The ports can be used to support a wide variety of functions including Regent R2 protocol Modbus protocol ASCII output and Guarded Peer Link communications The WINTERPRET application is used to configure the appropriate port functions and specify baud rate data format parity and node number Testing and Diagnostics The modules triplicated Safetybus interface ensures that no failure in the module will effect the operation of the Regent system or other module Extensive fault detection and annunciation of critical redundant circuits helps ensure that processors will not accept erroneous data from a faulty module Each type of communications module has a unique identification code that is read by the controller This code lets the controller know what type of module is installed in each communications slot If a module is removed and replaced with a module of a different type the processors will indicate a COMM error The processor modules perform background diagnostic checks on the module to test bus driver circuits and check the communications module ID codes Communications message fo
6. connected Figure 7 identifies the signal lines resistors and jumpers associated with each port Only the transmit TX and TX and receive RX and RX signal pairs are shown Other jumpers and resistors for signal pairs CTS RTS DTR and DSR are also located on the module but they are not used by serial communications for the Regent and their jumper positions are not important Note If desired you can install the termination pull up and pull down resisters external to the communications module at the ends of the multidrop network In this case position the jumpers in each communications module for a middle Industrial Control Services PD P Communications Modules T3150A Regent With each communications module s jumper settings the same module replacement is simpler A single spare module can replace any communications module without the need to position the jumpers specifically for end or middle Regents before replacement Refer to the communications port pin numbers shown in Figure 7 to determine the proper external connection of the resistors PD 6002 Mar 06 13 PD Communications Modules T3150A 5V Port 1 6S 2 ay o 9 g TX 22 D qr De KO 10 ee RX EN 23 lt RX 11 7 O N a 5V2 Port 2 2 9 E A TX 22 Bre KO 10 z E RX 23 lt RX lt 11 E202 120 Ohm VV E221 COM2
7. ded Peer Link protocol Host PC MMI Protocol Regent R2 Comm or Modbus or Gateway Connection RS232 3 wire Regent Host x lt p L lt 150 feet RX RX GND GND C RTS CTS DTR DSR Host PC MMI Protocol Regent R2 Comm or Modbus or Gateway Connection RS422 4 wire Regent Host TX TX L lt 4000 feet 1X TX RX RX RX RX Figure 3 Point to Point Communications PD 6002 Mar 06 Communications Modules T3150A Host PC MMI Protocol Regent R2 Multidrop 5 or Modbus or Gateway Connection RS422 4 wire L s 4000 feet Host Note Drop length at each node should be avoided or at least kept TX RX to a minimum drop lt 3 feet 0 C RX TX RX TX RX TX Regent Regent Regent End Middle End Figure 4 Multidrop Communications Industrial Control Services PD 6002 Mar 06 4 Maximum 32 Regents I P Communications Modules T3150A Protocol Guarded Peer Link Connection RS485 2 wire L lt 4000 feet Regent Regent Note Drop length at each node should be avoided or at least kept to a minimum drop lt 3 feet O 0 P gt RX TX RX TX RX TX Regent Regent Regent End Middle End Figure 5 Guarded Peer Link Communications Protocols and Communications Functions The protocol and function sup
8. e transmit lines of the serial ports are controlled and also determine if internal termination pull up and pull down resistors are connected to the serial lines Table 2 shows the proper jumper settings for point to point multidrop Regent R2 or Modbus and Guarded Peer Link communications PD 6002 Mar 06 11 12 Communications Modules T3150A Table 2 Communication Module Jumper Settings Note n indicates jumper installed Point to Multidrop Regent Guarded Peer Point R2 or Modbus Link Description Port 1 Port 2 End Middle End Middle TX pair terminator E101 E201 n RX pair terminator E102 202 P r TX pull up E111 E211 n RX pull up E112 E212 n n n TX pull down E121 E221 A RX pull down E122 E222 n n n Transmit control E131 E231 2 fi F Transmit control E132 E232 Transmit control E133 E233 n n n n Termination Pull up and Pull down Resistor Jumpers When the module is used for RS422 or RS485 communications the jumper positions for the internal termination pull up and pull down resistors must be considered Each termination resistor connects an internal 120 Ohm resistor across a specific differential pair and the pull up and pull down resistors connect a 1K Ohm resistor between each signal line and 5V or Comm These resistors should be connected only at the end nodes of the multidrop communication network Nodes in the middle should not have these jumpers
9. er from the two remaining power supplies and the system s communications functions are maintained Additional isolated power converters provide isolated power to the two serial ports This isolation provides protection from external communications cable signal noise and grounding from affecting module operations Serial Serial Communications Communications PORT 2 RS232 422 485 RCVR XMTR Port 1 PORT 1 RS232 422 485 RCVR XMTR Isolation Boundary I I I I I I I I I I I I ISOLATED I DC DC DC DC CONVERTER I ISOLATED CONVERTER module CONVERTER electronics VOTER POWER SHARING CIRCUIT Triplicated MSAFETYBUS paca he processor modules Figure 1 Block Diagram of Communications Module The Dual UART universal asynchronous receiver trans mitter buffers incoming and outgoing communications characters The triplicated processor modules interrupt once Industrial Control Services PD 6002 Mar 06 I P Communications Modules T3150A every millisecond to read characters from or write characters to the communications module When the processor modules read characters from the communications module the communications module sends characters through triplicated bus drivers to the processor Safetybus The processor modules vote this triplicated data and perform communications processing When the processor modules write data to the communications module the triplic
10. n the four screws removed from the right side of the module Turn the module over and install the two screws removed from the left side of the module Visually inspect the connector at the back of the communications module for bent pins If any pins are bent do not install the module Do not try to straighten bent pins Return the module to ICS for replacement If the pins are in good condition hold the module with both hands and open the two module release levers by pulling them toward you Carefully slide the module into the chassis Be careful to keep the module aligned while sliding it straight into the chassis The module should mount into the chassis with a minimum of resistance If the module does not mount easily do not force it Remove it and check it for bent or damaged pins Ifthe pins look okay try reinstalling the module When the module is almost fully into the chassis the release levers will contact the chassis and begin to rotate closed Press the levers closed to seat the module in the chassis The top release lever on each communications module is switched When the lever is in the open position the module is disabled If the module does not seem to have seated correctly open the release levers and gently pull it back off the seat and out of the chassis Check for bent or damaged pins If the pins look okay try reinstalling the module After the module is properly seated tighten the retaining screw at the
11. ported for each port is configured using the Serial Ports command from the Project Editor s Definitions menu in WINTERPRET An example of the Serial Ports dialog is shown in Figure 6 10 Communications Modules T3150A MODIFIED 1 19200 14 8 0 Local WINTERPRET connection ASCII 9600 14 8 N ASCII alarm message printer MODBUS 19200 1 8 E DCS Gateway Interface No 1 NET MASTER 19200 1 8 0 Guarded Peer Link No 1 to other Regents MULTIDROP 19200 14 84 0 Multidrop network to central WINTERPRET NET SLAVE 19200 14 8 0 Guarded Peer Link No 2 to other Regents Source Save Options Get From Disk Get From Regent Disk Only Disk And Regent Figure 6 VVINTERPRET s Serial Ports Configuration Dialog The function and protocol for each type of port that you can select is briefly described below For more information on using the Serial Ports command see Section 4 Working with Projects in the Regent User s Guide Comm Supports the Regent R2 protocol for point to point communications between the Regent and the computer running the WINTERPRET application Some third party Man Machine Interface MMI products and DCS gateways may also support point to point communications using the Regent R2 protocol Multidrop Supports Regent R2 protocol for multidropped Regents connected to a PC running the WINTERPRET application or other third party supporting products and gateways Ports configured for multidrop communica
12. rmat framing checksum and other communications errors Communications Modules T3150A are checked by the processor modules normal communications processing Failures result in a COMM module error indication at the processor modules and a COMM error at the communications module Front Panel Figure 2 shows the physical features of the communications modules The front panel of each module contains indicators showing overall module health and the transmit and receive status of each channel In addition to the front panel indicators each communications module has two DB 25 connectors female COMM Indicator This red and green LED pair indicates the overall health of the module During normal operation the green LED is on If a communications module fault is detected the red LED turns on and the green LED turns off Transmit Receive Indicators These green LEDs are connected directly to the serial signal lines and flash while data are being transmitted or received The TX LED flashes as data are sent from the module and the RX LED flashes as data are received by the module Industrial Control Services I P Communications Modules T3150A TRIPLEX WT COMM TX RX evcccccocccce LI ELL Figure 2 Communications Module PD 6002 Mar 06 Application PD Communications Modules T3150A
13. rotocols Serial Port Connector Module Cable Isolation Heat Dissipation Operating Temperature Storage Temperature Operating Humidity Vibration 10 to 55 Hz Shock Operating 20 No external power required powered by triplicated processor modules Two RS 232 RS 422 and RS 485 300 to 19 200 Regent R2 Modbus RTU ASCII Output Guarded Peer Link DB 25 female DB 25 male 1000 volts minimum serial device to logic 1000 volts minimum serial port to serial port 7 Watts 24 BTUs hour 0 to 60 C 32 to 140 F 40 to 85 C 40 to 185 F 0 to 95 relative humidity non condensing 0 15mm 15 g sine wave 11 msec Industrial Control Services PD P Communications Modules T3150A Electromagnetic Interference e IEC 801 Part 2 Electrostatic Level 3 Contact discharge of Discharges 6 kV e IEC 801 Part 3 Radiated A g Electromagnetic Fields Level 3 10 V M 27 MHz e IEC 801 Part 4 Transients 500 MHz and Bursts Level 4 2 kV 2 5 kHz for t 60 sec Safety Certified to DIN V VDE 0801 for Risk Class 5 Also designed to meet UL 508 and CSA 22 2 No 142 M1981 Dimensions Height 13 0 830 mm Width 1 5 88 mm Depth 9 0 229 mm Weight 3 0 lbs 1 4 kg PD 6002 Mar 06 21
14. tions require a node number ASCII Used by the Regent to transmit ASCII output messages to external serial equipment such as printers and VDUs ASCII output messages are programmed using the ASCII output element in ladder logic function blocks Industrial Control Services PD P Communications Modules T3150A Net Master Net Slave Used by the Regent for Guarded Peer Link communications to other multidrop Regents These ports require a node number Modbus Supports connection to external Modbus communications equipment that acts as a Modbus Master the Regent is a Modbus Slave A Modbus port supports the Modbus RTU protocol Modbus ports can be used in point to point or multidrop configurations These ports require a node number Jumper Settings for Point to Point and Multidrop Communications Each port can be independently configured for point to point or multidrop connections When shipped from the factory jumpers on board the communications module are set for point to point communications These settings are appropriate when a single Regent is connected to a PC or other communications equipment The port definition can be COMM ASCII or Modbus point to point as described above When the port definition is Multidrop Net Master Net Slave or Modbus multidrop then the jumper settings on the module must be changed Changing Jumper Settings The jumper settings on the module are used to determine how th
15. z ICS Regent Communications Modules RS 232 RS 422 and RS 485 T3150A Issue 1 March 06 Communications modules provide a serial communications interface between the controller and external equipment Communications modules are commonly used to connect the controller to the computer running the WINTERPRET application serial printers man machine interfaces distributed control system gateways and other peer to peer controllers Features e Two isolated serial ports per module e Supports RS 232 RS 422 and RS 485 standards e Regent R2 Guarded Peer Link and Modbus protocols e Front panel indicators on each module show communications status and transmit receive activity e T V certified for safety Risk Class 5 Module Operation A block diagram of a typical communications module is shown in Figure 1 Communications modules are serial receiver transmitters that provide an electrical interface for RS 232 RS 422 and RS 485 communications equipment Each communications module receives power from all three of the processor modules A power sharing circuit in each of the communications modules receives the power from the three Industrial Control Services 1 m Communications Modules T3150A processor modules and combines it through a diode OR power sharing circuit This ensures that if one processor module s power supply fails the communications module will continue to operate by drawing pow
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