Recommended RS-422A/485 Wiring Examples | Omron CQM1H-SCB41 specs

Wiring

Section 2-3

Note The Hood (FG) is internally connected to the ground terminal (GR) on the Power Supply Unit. Therefore, FG is grounded by grounding the ground terminal (GR) on the Power Supply Unit. Although there is conductivity between the Hood (FG) and pin 1 (FG), connect the Hood (FG) to the shield because the Hood (FG) has smaller contact resistance with the shield than pin 1 (FG), and thus provides bet- ter noise resistance.

Serial Communications Board

Power Supply Unit

	Hood and GR are
	internally connected.
Ground to 100 Ω or less	Grounding the GR terminal
	grounds the Hood (FG).

2-3-6 Recommended RS-422A/485 Wiring Examples

Recommended RS-422A/485 Cable

We recommend the following wiring methods to ensure quality transmissions for

RS-422A/485 communications.

1, 2, 3... 1. Always use shielded twisted-pair cables for the communications cables.

Model	Manufacturer

CO-HC-ESV-3Px7/0.2	Hirakawa Hewtech Corp.

2.Connect the shield of the communications cable to the Hood (FG) of the

RS-422A/485 connector on the Serial Communications Board. At the same time, ground the ground (GR) terminal of the Power Supply Unit to 100 Ω or less.

Note Always ground the shield only at the Board end. Grounding both ends of the shield may damage the device due to the potential difference between the ground terminals.

Connection examples are shown below.

2-Wire Connections

Serial Communications	Remote device
Board
Pin Signal	Signal
Hood	Shield
	Shield

21

Image 33

Omron CQM1H-SCB41 operation manual Recommended RS-422A/485 Wiring Examples, Recommended RS-422A/485 Cable, Wire Connections

Contents

Sysmac CQM1H Series Serial Communications Board  Omron Omron Product References About this Manual Name Cat. No Contents Table of Contents Communications for 11 Data Links 107 Precautions General Precautions Safety PrecautionsIntended Audience Application Precautions Operating Environment Precautions Xiv Applicable Directives Conformance to EC DirectivesConcepts Conformance to EC Directives Recommended Mounting Method Recommended Ferrite Cores Section Overview FeaturesModel Number Serial Communications Boards System Configuration Mounting Location Protocol Overview Sending C-mode Host Link Commands Host Link ModeProtocol Macros Slave-initiated Communications 4 PC 11 Data Links No-protocol Communications NT Links -- 11 Mode NT Links -- 1N Mode Basic Operating Procedure SpecificationsGeneral Specifications Serial Communications Board Board Components and Installation Board Indicators IndicatorsIndicator Color Status Meaning Component Names and Functions CPU Unit Indicators Connector Pin Layout2 RS-232C Port Tions method Wire Wire, 1N Synchroniza Applicable Connectors3 RS-422A/485 Port Recommended Cables Switches Terminating Resistance Switch Wire or 4-Wire SwitchLabel Name Settings Factory setting Mounting the Board Installation Mounting Height and Connector Cover Dimensions External Dimensions Precautions in Handling the Board Connectors WiringStandard Connectors For Both RS-232C RS-422A/485 Recommended Cables RS-232C Cables Wiring Precautions Reducing Electrical Noise for External WiringRS-422A/485 Cable WiringSection Pin Function Factory Setting Recommended RS-232C Wiring Examples Wire Connections Recommended RS-422A/485 Wiring ExamplesRecommended RS-422A/485 Cable Model Manufacturer CO-HC-ESV-3Px7/0.2 Hirakawa Hewtech Corp Using a 3G2A9-AL001 Link Adapter Using an NT-AL001-E RS-232C/RS-422 Link AdapterLength Model Wiring Connectors Cable PreparationShield Connected to Hood FG Shield Not Connected to Hood FG Soldering Assembling Connector Hood Connecting to the Board Default Settings and Related Bits/Flags Contents Addresses PC Setup Settings Words Bits Function Applicable Mode Word Bits Function Communications Modes Control Bits, Flags, and Status Information 00 to Port Slot 1 Inner Board Error Code Hex Word Bits Function Inner Board Error Flag Host Link Communications TXD-- Instruction Host Link Communications Serial communications Features Mode Host Link CommunicationsSimultaneous Usage of Both Ports Host Link Specifications Application Procedure Port Bits Default Function Setting PC-initiated Communications TXD-- Instruction Host-initiated Communications Host Link Commands Connections Port Configura Schematic diagram Tion RS-232CTypes of Connection Connection Examples RTS RS-232C Using NT-AL001-E Converting Link Adapters 1N Connections Using RS-232C Ports Connections Using RS-422A/485 Ports 1N Connections Using RS-422A/485 Ports Standard Cables from Board to Personal Computer Preparing an RS-232C Cable for the ComputerBoard port Computer Network type Model Length Remarks Port Protocol Normal Response FrameFormat FCS Frame Check Sequence Error Response Frame Format Computer Communications Sequence Using the TXD-- Instruction Example ProgramsExample Program for TXD-- Application Example Communications Control Signals Communications Timing Setting a Transmission Delay Header code PC mode Name Host Link Commands End Codes End Contents Probable cause Corrective measures Code RS-232C Ports Changes from Previous Products Full-duplex transmissions that do not use Half-duplex transmissions that use CD 2 RS-422A/485 Ports Protocol Macros Overview of the Protocol Macro Functions Protocol Macro Function Specifications Step common Per sequence Parameters Transmission Sequence contents Number of stepsControl Parameters Response Error processing Step contents CommandsRepeat counter Retry count Tents Header Stant Terminator Data attrib Utes Con Description Message con ConData attrib Stant Utes of ad Vari Using the Protocol Macro Function Using the Standard System ProtocolsBe traced SEND&RECEIVE Modifying Standard System Protocols Restrictions in Using the CX-Protocol Restriction ProcedureStorage Memory Select Transfer to PLC via Online or Port Bits Setting Function Using Standard System Protocols Using User-created Protocols Send DataReceive Data Transferring the created project to the Board Port Configuration Schematic diagram Connecting RS-232C Ports Connections to E5CK Controller Connections to a Modem DIP SW 485 RS-422A Terface Hood 3G2A9-AL001 Receive Protocol Structure Parameter Meaning Sequence Parameters Step Parameters Level Setting Level Possible changes in settings Protocol Data Error Flag Board Identification Error Flag hardware errorPort 2 Protocol Macro Execution Error Flag Port 1 Protocol Macro Execution Error Flag Port 1 Communications Error Flag Word Bits Name and Function Classifi Set Reset CationPort 2 Communications Error Flag Port 1 Sequence Abort Completion Flag Port 2 Protocol Macro Error Code Port 1 Protocol Macro Error CodePort 2 Tracing Flag Port 1 Executed Reception Case No. code Port 1 Continuous Trace Start/Stop Bit Port 2 Restart BitPort 2 Continuous Trace Start/Stop Bit Port 1 Shot Trace Start/Stop Bit Port 2 Transfer Step Error Processing Flag Port 1 Transfer Step Error Processing FlagPort 1 Sequence END Completion Flag Port 1 Forced Abort Bit PMCR-- Instruction Specifications Using Protocol MacrosError Codes Executing Communications Sequences First Receive Data FlagsStorage Word D PMCR-- Operation Ladder Program Structure Operand Areas and Address RangesProgramming Example Connections Ladder Program ExampleSend Word Allocation for Sequence No Present Value Read Receive Word Allocation for Sequence No Present Value Read Operand Settings for the PMCR-- Instruction Ladder Programming Example Precaution on Reception Failures for Pmcr Transmission Methods Error Flags for Overrun, Framing, and Parity Errors Time Lag t1Baud rate b/s Lag time ms Processing When a Sequence Ends Abnormally Example Precautions on Using the Force Abort Bit No-protocol Communications Specification No-protocol Specifications Start code End code Yes Send/Receive Message Frames 100 Connecting to a Bar Code Reader via RS-232C Transmit TXD-- in No-protocol Mode Using No-protocol CommunicationsTransmit TXD-- and Receive RXD Control Word C Receive RXD-- in No-protocol Mode RXD-- Communications Procedure TXD-- Communications Procedure Computer Settings PC SettingsApplication Example Conditions Communications for 11 Data Links Port Bits Function Setting PC Setup SettingStarting Data Links OverviewSection Specifications Overview Master PC Settings Using 11 Data LinksSlave PC Settings Conditions NT Link Communications NT Links 11 Mode NT Links 1N ModePrecautions Overview of NT Links 115 NT Link Settings for 11 Mode NT Link Settings for 1N Mode 117 118 Troubleshooting and Maintenance Indicators Possible cause Remedy Board CPU Unit Front-panel Indicator Error Displays Troubleshooting Board Error InformationSerial Communications 122 123 124 Board ReplacementSection 126 Not perform Error Indicator Error details Cause Remedy Code 128 3 1N NT Link Mode Cleaning Cleaning and Inspection Materials Required Daily InspectionMaterials Required Occasionally Inspection Items Board Replacement Settings after Replacing the BoardReplacement Procedure Protocol Macros Designed with CX-Protocol Procedure Using Standard System ProtocolsIntroduction Example Standard System Protocols Receive Data Word Allocation 4th OperandProtocol name Function System Configuration for Standard System Protocol CompoWay/F Master ProtocolCompoWay/F Transmission Procedure Communications SpecificationsCommand and Response Formats Command Format Command Frame Contents Response Frame ContentsAppendix B Command Data contents Code Command FrameExample End code Name Meaning Variable type Contents Command and TextExample Variable Area Read Response Text Structure of the Protocol CompoWay/F Master Protocol Sequences CompoWay/F Message Frames and PMCR260 Operands Send with Ascii Conversion, with Response Sequence NoResponse Frame Receive Data Word Allocation 3rd Operand of PMCR260 Send Data Word Allocation 2nd Operand of PMCR260 145 Broadcast with Ascii Conversion, No Response Sequence No Send with No Conversion and with Response Sequence No Broadcast with No Conversion and No Response Sequence No 149 150 RS-232C Connections RS-485 2-wire Connections RS-422 4-wire Connections E5jK Digital Controller Read Protocol Appendix C Connection Configuration RS-232C ConnectionRS-485 Connection Read Set Point during SP Ramp Sequence No Read Process Value Sequence NoAppendix C Send Data Word Allocation 2nd Operand of Pmcr Read Alarm Value Sequence No Read MV Sequence NoRead Set Point Sequence No Read Cooling Coefficient Sequence No Read Dead Band Sequence No Read Manual Reset Value Sequence No Read Hysteresis Sequence No Read Control Period Sequence NoRead SP Ramp Time Unit and Set Value Sequence No Read LBA Detection Time Sequence No Read MV Limits Sequence No Read MV at Stop Time and at PV Error Sequence No.013 Read Alarm Hysteresis Sequence No Read Input Digital Filter Sequence NoRead Input Shift Limits Sequence No Read Level 0 Parameters Sequence No Read Level 1 Parameters 1 Sequence No Read Level 1 Parameters 2 Sequence No 166 Read Level 2 Parameters 1 Sequence No Read Level 2 Parameters 2 Sequence No 169 General-purpose Read Sequence No E5jK Digital Controller Write Protocol Appendix D Write Set Point Sequence No Write Alarm Value Sequence No Write Cooling Coefficient Sequence No Write Manual Reset Value Sequence NoWrite Dead Band Sequence No Write Hysteresis Sequence No Write Control Period Sequence No Write SP Ramp Time Unit and Set Value Sequence NoAppendix D Write MV at Stop Time and at PV Error Sequence No Write LBA Detection Time Sequence NoWrite MV Limits Sequence No Write Alarm Hysteresis Sequence No Write Input Digital Filter Sequence NoWrite Input Shift Value Sequence No Write Level 0 Parameters Sequence No Write Level 1 Parameters 1 Sequence No Write Level 1 Parameter 2 Sequence No Write Level 2 Parameters 1 Sequence No Write Level 2 Parameters 2 Sequence No General-purpose Write Sequence No Switch to Level 0 Software Reset Sequence No Remote/Local Sequence No Run/Stop Sequence No Execute/Cancel AT Sequence No Software Reset Sequence No Switch to Level 1 Sequence No Appendix E E5ZE Temperature Controller Read Protocol RS-232C Connections Signal name Signal direction Pin No Brevi Ation RS422/485 Connections RS-485 Pin No Signal name Abbreviation Signal direction RS-422A Appendix E Communications Parameter DIP Switch Switch SettingsUnit Number Switch Baud Rate DIP Switch 192 Read Output Values Sequence No Read Set Point, Process Value, and Output Value Sequence No 195 196 Read Alarm Mode Sequence No Read Output Mode Sequence No Read Alarm Temperatures Sequence No Read Operation Status Sequence No Read Setting Unit Sequence No Read Error Status Sequence No Read Input Shift Value Sequence No Read Ramp Value Sequence No Read Output Value Limit Sequence No Read Present Set Point Sequence No Read Output Value Change Rate Limit Sequence No Read HB Alarm and HS Alarm Valid Channels Sequence No Read Heater Current and SSR Leakage Current Sequence No.121 Read Dead Band/Overlap Band Sequence No 208 Appendix F E5ZE Temperature Controller Write Protocol Write Set Point Setting Unit 1 Sequence No Write Set Point Setting Unit 0.1 Sequence No 212 213 Write Alarm Mode Sequence No Write Output Mode Sequence No Write Alarm Temperature Setting Unit 1 Sequence No Write Alarm Temperature Setting Unit 0.1 Sequence No Start Autotuning Sequence No Write Setting Unit Sequence No Cancel Autotuning Sequence No Appendix F Write Manual Output Value Sequence No Write Ramp Value Sequence No Write Output Value Limit Sequence No Write Output Value Change Rate Limit Sequence No Initialize Settings Sequence No Save Settings Sequence No Write HB and HS Alarm Valid Channels Sequence No Write Dead Band/Overlap Band Sequence No Stop Operation or Control Sequence No Start Control Sequence No Start Manual Operation Sequence No Appendix G E5jJ Temperature Controller Protocol RS422A/485 Connections Signal name Abbreviation Signal direction Pin No Appendix G Input Signal ground Select Local Mode Sequence No Select Remote Mode Sequence NoSelect Backup Mode Sequence No Select RAM Write Mode Sequence No Write Parameters 1 Sequence No Save Set Point Sequence No Write Parameters 2 Sequence No 235 Read Parameters 1 Sequence No Read Parameters 2 Sequence No 238 Read Set Point Limit Sequence No Read Output Value Sequence No Read Initial Status Sequence No Read Heater Current Sequence No 241 242 ES100j Digital Controller Protocol Appendix H Appendix H RS-422A/485 Connections Appendix H Read Event Data Sequence No Read Time Signal Sequence No Read Error Detection Data Sequence No 249 Read Heater Burnout Data Sequence No Read PV Data Sequence No Read SP Data Sequence No Read MV Data Sequence No Read Control Monitor Data Sequence No 255 Read Adjustment Parameters Sequence No 257 258 Write Adjustment Parameters Sequence No Read PID Control Parameters 1 Sequence No 261 Read PID Control Parameters 2 Sequence No 263 Write PID Control Parameters 1 Sequence No 265 Write PID Control Parameters 2 Sequence No Read Local SP Sequence No 268 Write Local SP Sequence No Read Program Parameters Sequence No 271 Write Program Parameters Sequence No Remote Setting Mode Sequence No External Setting Mode Sequence No Local Setting Mode Sequence No Run Command Sequence No Auto Mode Sequence No Reset Stop Sequence No Execute A.T. Sequence No Manual Mode Sequence No Cancel A.T. Sequence No Change Bank No. Sequence No Change Pattern No. Sequence No Read Controller Status Sequence No General-purpose Command Sequence No 282 Protocol Configuration K3Tj Intelligent Signal Processor Protocol Appendix Ladder Interface SettingsSequence Communications Function Ladder interface Send word Receive word Allocation Signal name Abbreviation Pin No Direction K3T j Intelligent Signal Processor Protocol Inverting output Input or output Non-inverting output Signal name Abbreviation Signal direction Terminal Reset Control Continuous Units Sequence No Reset by Unit Number Sequence No 289 Write Set Value L Continuous Units Sequence No Write Set Value H Continuous Units Sequence NoWrite Set Value LL Continuous Units Sequence No Write Set Value with Bank by Unit Number Sequence No Write Set Value HH with Bank Continuous Units Sequence No Write Set Value L with Bank Continuous Units Sequence No Write Set Value H with Bank Continuous Units Sequence NoWrite Set Value LL with Bank Continuous Units Sequence No Write Set Value O5 with Bank Continuous Units Sequence No Write Set Value O2 with Bank Continuous Units Sequence No Write Set Value O1 with Bank Continuous Units Sequence NoRead Set Value by Unit Number Sequence No Read Set Value H Continuous Units Sequence No Read Set Value HH Continuous Units Sequence NoRead Set Value L Continuous Units Sequence No Read Set Value LL Continuous Units Sequence No Read Set Value with Bank by Unit Number Sequence No Read Set Value H with Bank Continuous Units Sequence No Read Set Value HH with Bank Continuous Units Sequence NoRead Set Value L with Bank Continuous Units Sequence No Read Set Value LL with Bank Continuous Units Sequence No Read Set Value O2 with Bank Continuous Units Sequence No Read Set Value O3 with Bank Continuous Units Sequence NoRead Set Value O1 with Bank Continuous Units Sequence No Read Holding Data Sequence No Read Holding Data PH Continuous Units Sequence No Offset Contents Data Read Holding Data BH Continuous Units Sequence NoRead Display Value PV by Unit Number Sequence No 300 Model Data Read by Unit Number Sequence No Read Display Value PV Continuous Units Sequence No Model Data Read Continuous Units Sequence No 303 V500/V520 Bar Code Reader Protocol Appendix J Appendix J V520 Connections V500 Connections V500-C11 BCR Functions System SettingHost Interface V520-R121 BCR Read Stop Sequence No BCR Read Start Sequence NoData Read Sequence No Complete Data Read Sequence No CODE93 BCR Function Write V500 Sequence No BCR Function Read V500 Sequence No Log Data Output Request V500 Sequence No BCR Connection Confirmation V500 Sequence No Preset Data Set V500 Sequence No Data Continuous Read Scan V500 Sequence No Log Data Clear V500 Sequence NoData Continuous Read Interrupt V500 Sequence No BCR Initialize V500 Sequence No General-purpose Command 1 Sequence No General-purpose Command 2 Sequence NoData Continuous Read Interrupt V520 Sequence No Receive Data Storage Word Allocation 3rd Operand of Pmcr Appendix J 3Z4L Laser Micrometer Protocol Appendix K Appendix K 319 3Z4L-3000 Series DIP Switch DIP Switch Settings3Z4L-4000 Series DIP Switch Setting Status 3Z4L-3000 Series Delimiter Control Code Setting 3Z4L-4000 Series 322 Offset Contents Data Data format Series Memory Switch Set Sequence No3Z4L Clear Sequence No Mm Unit Set Sequence No Calibration Release Sequence No Calibration Set Sequence No Measurement Condition Set 3000-series Sequence No Program Number Set 3000-series Sequence No 326 327 Measurement Condition List Request 3000-series Sequence No Measurement Condition Release 3000-series Sequence No 329 330 Single Run Measurement Start 3000-series Sequence No Zero Run Measurement Start 3000-series Sequence NoContinuous Measurement Start Scan 3000-series Sequence No Measurement Termination 3000-series Sequence No Data Request 3000-series Sequence NoStatistic Processing Execution 3000-series Sequence No All Statistic Memory Clear 3000-series Sequence No Statistic Processing Non-execution 3000-series Sequence NoStatistic Processing Memory Clear 3000-series Sequence No Statistic Result Request 3000-series Sequence No Appendix K Offset Contents Data Data format Memory Switch Set 1 3000-series, High-speed Type Sequence No Memory Switch Set 2 3000-series, High-speed Type Sequence No 337 338 3Z4L Initialize 3000-series Sequence No Measurement Condition Set 4000-series Sequence No 341 Measurement Condition List Request 4000-series Sequence No Measurement Condition Release 4000-series Sequence No Single Run Measurement Start 4000-series Sequence No Continuous Measurement Start Scan 4000-series Sequence No Deflection Measurement Start 4000-series Sequence No Data Request 4000-series Sequence No Continuous Measurement Termination 4000-series Sequence NoForced Positive Zero 4000-series Sequence No Forced Negative Zero 4000-series Sequence No General-purpose Command 1 4000-series Sequence No General-purpose Command 2 4000-series Sequence No Visual Inspection System Protocol Appendix L Appendix L For RS/CS Flow Control Pin No Signal name Abbreviation Offset Content data format Data Measurement Execution F200 Sequence NoContinuous Measurement Execution Scan F200 Sequence No Continuous Measurement Execution Interrupt F200 Sequence No Reference Object Registration Group F200 Sequence No Reference Object Registration Criterion F200 Sequence NoEvaluation Condition Change F200 Sequence No Arbitrary Measurement Value Acquisition F200 Sequence No Measurement Execution F300 Sequence No Continuous Measurement Execution Scan F300 Sequence No 358 Continuous Measurement Execution Interrupt F300 Sequence No 360 Measurement Execution and Positioning F350 Sequence No Illumination Fluctuation Follow Execution F300 Sequence No Camera Designation and Positioning F350 Sequence No Scene Switching and Positioning F350 Sequence No Camera Change Decrease by 1 F200/300 Sequence No Scene Switching Decrease by 1 Sequence No Reset F200/300 Sequence NoScene Switching Increase by 1 Sequence No Camera Change Increase by 1 F200/300 Sequence No General-purpose Command Send Sequence No Scene Switching Arbitrary Sequence NoGeneral-purpose Command Send/Receive Sequence No Measurement, Inspection Termination Sequence No 366 V600/V620 ID Controller Protocol Appendix M Appendix M 369 RS-422A Connections DIP Switch V600/620-CD1D DIP Switches 372 V600-CAjA DIP Switches Read ASCII/1 Sequence No Read ASCII/2 Sequence No Read ASCII/4 Sequence No Read ASCII/8 Sequence No Read Hexadecimal/1 Sequence No Read Hexadecimal/2 Sequence No Read Hexadecimal/4 Sequence No Read Hexadecimal/8 Sequence No Auto-read ASCII/1 Sequence No Polling Auto-read Ascii Sequence No Auto-read Hexadecimal/1 Sequence No Polling Auto-read Sub-command ASCII/2 Sequence No Polling Auto-read Sub-command ASCII/4 Sequence NoPolling Auto-read Sub-command ASCII/8 Sequence No Polling Auto-read Hexadecimal Sequence No Polling Auto-read Sub-command Hexadecimal/2 Sequence No Polling Auto-read Sub-command Hexadecimal/4 Sequence No Polling Auto-read Sub-command Hexadecimal/8 Sequence No.517Write ASCII/1 Sequence No.518 Write ASCII/2 Sequence No 388 Write ASCII/4 Sequence No Write ASCII/8 Sequence No Write Hexadecimal/1 Sequence No Write Hexadecimal/2 Sequence No Write Hexadecimal/4 Sequence No Write Hexadecimal/8 Sequence No Auto-write ASCII/1 Sequence No Auto-write Hexadecimal/1 Sequence NoPolling Auto-write ASCII/2 Sequence No Polling Auto-write Subcommand ASCII/4 Sequence No Polling Auto-write Subcommand ASCII/2 Sequence NoPolling Auto-write Subcommand ASCII/8 Sequence No Polling Auto-write ASCII/4 Sequence No Polling Auto-write Subcommand Hexadecimal/4 Sequence No Polling Auto-write Subcommand Hexadecimal/2 Sequence NoPolling Auto-write Hexadecimal/2 Sequence No Polling Auto-write Hexadecimal/4 Sequence No Polling Auto-write Subcommand Hexadecimal/8 Sequence No Polling Auto-write Hexadecimal/8 Sequence NoData Check Sequence No Control Sequence No Command Processing Cancel Sequence No Error Information Read Sequence No Polling Auto-write Command Processing Cancel Sequence No Polling Auto-read Command Processing Cancel Sequence No 402 Appendix N Hayes Modem AT Command Protocol Compatible Modems Modem Settings Dialling Operand and Word Settings of Pmcr Setting Example Password Verification Password Verification Operation Data Send/ReceiveOperand Escape Mode Hang Up CommandCommunication Errors Numbers Index 413 414 415 416 417 Revision code Date Revised content Revision HistoryOriginal production Authorized Distributor