Remote I/O Communications Characteristics | Omron CS1W-DRM21

Remote I/O Communications Characteristics

Section 8-1

8-1 Remote I/O Communications Characteristics

This section describes the characteristics of remote I/O communications when the DeviceNet Unit is used as a master in combination with OMRON’s slaves. Use this section for reference when planning operations that require precise I/O timing.

The equations provided here are valid under the following conditions:

1,2,3... 1. The DeviceNet Unit is operating with the scan list enabled.

2.All of the required Slaves are participating in communications.

3.No errors are being indicated at the DeviceNet Unit

4.Messages aren’t being produced in the Network (from another company’s configurator, for example).

Note The values provided by these equations may not be accurate if another com- pany’s Master or Slave is being used in the Network.

8-1-1 Communications Cycle Time and Refresh Time

This section explains the communications cycle time, communications time per slave, and refresh time required for calculating processing time by the DeviceNet Unit.

Communications Cycle Time

The communications cycle time is the time from the completion of a Slave’s remote I/O communications processing until remote I/O communications with the same Slave are processed again. The communications cycle time is used to calculate the maximum I/O response time.

The communications cycle time depends on the number of Masters in the Network and on whether or not message communications are being per- formed. The following explanation is for a network with one Master. For net- works with several Masters, refer to More than One Master in Network in the following section.

Communications Cycle The following graph shows communications cycle time for the number of

Time Graphslaves when there are both 16-point output and 16-point input slaves. Inputs: Bit strobe, Outputs: Poll connection

Communications cycle time (ms)

Number of Slaves

:Communications cycle time: 500 kbps (ms)

:Communications cycle time: 250 kbps (ms)

:Communications cycle time: 125 kbps (ms)

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Omron CS1W-DRM21, CJ1W-DRM21 Remote I/O Communications Characteristics, Communications Cycle Time and Refresh Time

Contents

Revised July Page Moderate injury, or property damage Word and is abbreviated Wd in documentation in this senseThing else To the user Trademarks and Copyrights  Omron Table of Contents Remote I/O Slave Communications 121 Manual Products Contents Cat. No About this Manual WS02-CXPC1-EV Precautions Intended Audience General PrecautionsSafety Precautions Operating Environment Precautions Operating Environment Precautions Application Precautions Application Precautions Conformance to EC Directives Applicable DirectivesConcepts Conformance to EC Directives Xvii Section Overview of DeviceNet Section VME Master Boards Overall System ConfigurationMaster Features DeviceNet Master Units and DeviceNet Units Configurator Features Slave Features TerminalsEnvironment-resistant Terminals Remote Adapters Temperature Input Terminals C200H I/O Link UnitsRS-232C Units Multiple I/O TERMINALs Master Model Without Configurator With Configurator Applicable Units and DeviceNet FunctionsRemote I/O Master C200HX/HG/HE Remote I/O Slave only Units Mounted in a PC C200HX/HG/HE CQM1H CQM1-DRT21CS1W-DRM21 CIO, WR, DM, EM, HR CIO, DM, EM, AR, LR, T/C Message Communications Communications InstructionsMaster Unit model Send Receive Master model Model Capacity Types of Slave Communications Software Switches and Communications StatusMasters Name Appearance Points Model number Remarks DRT1-HD16S DRT1-ND16SDRT1-TS04T DRT1-TS04P DRT1-ID04CL DRT1-ID04CL-1DRT1-ID08CL DRT1-ID08CL-1 Multiple I/O Terminal Units Tion Number Supply Input Output Voltage GT1-AD08MX GT1-DA04MXGT1-TS04T GT1-TS04P DeviceNet Unit Features DeviceNet Configurator Without the Configurator Explicit Message CommunicationsFins Message Communications User-set allocations Through a Serial Line Configurator ConnectionTions. The maximum I/O for the slave function is 100 words CX-Programmer ProgrammingMonitoring of DeviceNet Slave PCs Ver .1 or Later Refer to 4-1 Master Remote I/O Communications for details Various Connection MethodsMaximum Network Length 500 m Specifications General SpecificationsFunctional and Performance Specifications DeviceNet Unit Specifications Figurator OUT Section Remote I/O Allocation method Fixed allo CVM1/CV Cations parameter settings, etc Comparison between CS1W-DRM21 and CJ1W-DRM21 CS1W-DRM21 C200HW-DRM21-V1 Comparison with Previous ModelsCS/CJ-series PC Comparison with Previous Models Using the Configurator 300 words total for Eeprom Models Outline of the ConfiguratorModel Contents Personal Computer Configurator Specifications With no allocation area duplication Hardware Preparations for Communications Basic Operating ProceduresNetwork Installation Procedure Creating Routing Tables Sysmac Link Unit, Controller Link Unit, and Ethernet UnitTions to be used, as shown in the table below Communications Procedures Prior to Starting Communications Using the Master FunctionUser-set Allocations Using Allocated DM Area Words Fixed Allocations Using Slave Function User-set Allocations Using the Configurator Section Section List of Usage Methods by Purpose Situation Action List of Usage Methods by Purpose Nomenclature and Installation Nomenclature and Functions IndicatorsNomenclature and Functions OFF Status Indicators MS and NSIndi Color Status Meaning likely errors Seven-Segment Display Seven-segment DigitsFollowing table shows the functions of the 7-segment digits Status Display Switch Settings Dot IndicatorsFollowing table shows the functions of the dot indicators Unit No. Switch DIP Switch Baud Rate Installing the DeviceNet Unit System Configuration PrecautionsConnectors Continue/Stop Remote I/O Communications CS-series MountingCS-series, up to 16 Units can be mounted to the CS1W-BC CJ-series Handling PrecautionsCarefully align the connectors to mount the DeviceNet Unit Remove the label after wiring External Dimensions Allocated CIO and DM Words Overview of Word Allocations Unit number Allocated words Allocated CIO Area WordsAllocated DM Area Words Software Switches 1 Word n Allocated CIO Area Words Mas Scan Unit Ter List Oper Func Sta Ating Tion Tus Mode Unit status area 2 word n+11 Master Status 1 word n+12Word n n = CIO 1,500 + 25 x unit number OFF→ Mas List Oper Func Sta Ating Tion Tus A C2 error will be displayed on Mode Alloca Tions Word n+1 n = CIO 1,500 + 25 x unit number Software Switches 2 Word n+1Slave Unit Func Oper Tion Ating Mode Reserved By system Slave Unit Func Oper Tion Ating Mode User Allocates the following words to the slave Pro List Func Oper Sta Tion Ating Tus Mode Scan Slave Unit Master COS Send Switches Words n+2 to n+5 Disconnect/Connect Switches Words n+6 to n+9 Bit Name Status Controlled Unit operation Unit Status 1 Word n+10 Word n+10 n = CIO 1,500 + 25 x unit number Unit Status 2 Word n+11 Word n+11 n = CIO 1,500 + 25 x unit number Itored from I/O Data Communications Flag word n+12 bit Master Status 1 Word n+12 Word n+12 n = CIO 1,500 + 25 x unit number Code Details Master Status 2 Word n+13Master I/O Allocation Status Slave Status 1 Word n+14 Word n+14 n = CIO 1,500 + 25 x unit number Tions Flag for Ter OUT 2/IN List Enabled Slave Status 2 Word n+15Registered Slave Table Words n+16 to n+19 Master Node Addresses 13 C200H Master Replacement Master Status 1 Word n+24 Normal Slave Table Words n+20 to n+23Word n+24 n = CIO 1,500 + 25 x unit number ON/OFF Unit Structure Communications Cycle Time Setup Table Allocated DM Area Words Master User Allocations Setup Table Code Name Word range Enabled before you set these valuesAreas and Word Ranges Code Description Details Allocation Size Setup TableSetting Results Slave User Allocations Setup Table Setting Example Word Ranges Communications Cycle Time Reference TableMaster User-set Allocations Reference Table Slave User-set Allocations Reference Table Figuration Slave with the scan list disabled Error Flags Slave Detailed Status COS Remote I/O Master Communications Master Communications Master Remote I/O CommunicationsAllocations Using the Master User Fixed AllocationsUser-set Allocations Allocations Table Section Remote I/O Master Specifications Slave alloca Fixed allo Pattern One Master Unit Multiple Master Units connected Precautions on the Number of Master UnitsNumbers of Master Units when DeviceNet Units are used Fixed Allocations for Remote I/O Procedure for Using Remote I/O MasterUser-set Remote I/O Allocations Using DM Area Settings User-set Remote I/O Allocations Using the Configurator Scan List Contents Scan List Scan List Enabled and Scan List Disabled Through the allocated DM Through the ConfiguratorCreating the Scan List Shown below Use a Software Switch to select the allocation area Fixed AllocationsAllocated Words Backing Up the Scan List Procedure Place the CPU Unit in Program mode Turn onMaster Enable Switch Select Fixed Fixed Allocations Area 104 Node address Outputs Inputs Product Changing System ComponentsFixed Allocations Example Turn on the Scan List Enable SwitchResulting Slave Allocation User-set Allocations User-set Allocations Methods 108 Procedure Turn on the Master Enable Switch Setting the Master User Allocations TableFirst word for the Allocation Size Setup Table Setting the Allocation Size Setup Table Turn on the Slave User Allocations Switch Master User Allocations Table Multiple masters cannot share the same slaveChanging System Components Resulting Slave Allocations Allocation Size Setup TableTurning on the Master User Allocations Switch 113 Procedure Step Same node address cannot be allocated more than once Example of User-set Allocations Using the Configurator Starting and Stopping Remote I/O Communications Example of Ladder Programming for Remote I/O CommunicationsStarting Remote I/O Communications Stopping Remote I/O Communications Example of Ladder Programming for Remote I/O Communications Condition Error Details Results Indicators Segment Display Errors that May Occur in Remote I/O CommunicationsFollowing errors may occur during remote I/O communications Condition Error Details Results Indicators Remote I/O Slave Communications Slave Communications Slave Remote I/O CommunicationsAllocation Methods Remote I/O and Slave Communications Specifications Procedures for Using Remote I/O Slave Communications 124 Stop Slave Select a FixedAllocation Area Turn on the Slave Fixed Allocation Area Connection Types Stop Slave CommunicationsSet the Slave User Allocations Table Slave User Allocations Table Areas and Word Ranges for the OUT 1/IN 1 Areas Turn on the Slave User Allocations Switch word n+1, bitTurn on the Slave Enable Switch Slave areas Block Setting throughConfiguration Connection Types and Allocated I/O Areas Specified connection OUT 1 area 2 area Type Message Communications Overview Outline of Message CommunicationsOverviewSection Fins messages Explicit messages Type of Fins message Data send/receive Fins commands Fins Message CommunicationsOverall Structure Nodes masters and/or slaves that support Fins messages Any Fins Command Unit SeriesDeviceNet Instructions Master Unit To send Receiving Fins Message Communications Explicit Message CommunicationsSending Fins Message Communications Message Communications Specifications Sages Message Communications Error Indications Message Monitoring Timer Message Communications Errors Fins Communications Fins Commands and ResponsesIndicators Sending/Receiving Fins Command/Responses Command CodesAre required follow the command code Response Codes Fins Command Lists Commands Addressed to CS/CJ-series CPU UnitsFunction Name Command Code Units Supporting Fins Communications Function Name Command Error Clear Error LOG Read Error LOG ClearForced SET/RESET Forced SET/RESET Cancel Clock Read Clock Write Using Fins Message Communications Setting Node AddressesCommands Addressed to DeviceNet Units Command to Send Explicit DeviceNet Messages Routing Tables Relay network table, as described belowLocal Network Tables Example Procedure for Creating the Routing Table Table is createdRelay Network Tables Lowed on the way to the final network Data Send/Receive Instructions DescriptionControl Data DeviceNet networks Unit Setting Indicates a Unit as shown in the following table Response beginning at word D Sending Fins CommandsOperating mode, and perform other functions at other nodes Using SEND090, RECV098, and CMND490 Communications Flag Operation Type Name Address Content Word BitCommunications Flags Following table Communications Instructions Completion CodesTiming of Reading Responses Send/Receive Data Areas Example 1 Sending Data Using Send Command DetailsProgramming Examples Operation Program Example Bset Example 2 Sending a Fins Command Using Cmnd Connecting Networks for Fins Communications Example Program Sending Explicit Messages Sending Explicit Messages Fins Command Explicit Message Send 28 Command Block Response BlockError Responses Normal Response Sending Explicit Messages Using CMND490 162 Vendor code is read from a Slave Omron vendor code 002F Hex Example Sending Explicit Messages Using CMND490Following command is used Cmnd S D C Response Receiving Explicit Messages List of PLC Object Services PLC Objects provide the following servicesStatus Read/Write for CPU Units ITOR, RUN Service Class ID Instance ID Request Contents Code Data Memory Read/Write for CPU Units CPU Information Read Service Code 0E Hex Command BlockAttribute ID Hex Contents Attribute value size Hexadecimal CPU Unit Write Service Code 10 Hex Error code Data cleared Hex Fffe 171 Operation Status CPU Unit Status Read Service Code 40 HexClass ID command Always 002F Hex 173 Byte Data Read Service Code 1C Hex Areas for the PC you are using Hexadecimal as shown in the following tableTo read the data is specified in hexadecimal as shown below Data will be read to the high word Data from is specified in hexadecimal as shown below Word Data Read Service Code 1D HexSpecified in hexadecimal as shown in the following table Mal Byte Data Write Service Code 1E HexYou are using Instance ID Hex CPU Unit memory area Word range For write Word Data Write Service Code 1F HexData areas for the PC you are using Data is written is specified in hexadecimal as shown below Other Functions Connecting to the CX-Programmer via the DeviceNet Setting the Message Monitoring Timer of the DeviceNet Unit Use the Configurator to set the message monitoring timerSetting the Message Monitoring Timer 184 Response when Using the CX-Programmer via the DeviceNet Memory Card Backup Functions Outline of Functions Backing Up Unit Setup FilesRestoring Unit Setup Files Saving Files from Configurator to Memory Card File Names Communications Timing Communications Cycle Time Remote I/O Communications CharacteristicsCommunications Cycle Time and Refresh Time Communications Time/Slave 2 I/O Response Time Refresh TimeMaximum I/O Response Time Slaves with More Than 8 Bytes of Input or Out put Communications Cycle Time PC Cycle Time More than One Master in Network Minimum I/O Response Time Case Slave’s indicator status System Startup TimeMaster Function Tions start up Message Communications Message Communications TimeSlave Function Message Communications Only No Remote I/O Communications Calculating the Maximum Message Response Time Request from One Client Byte Data Read 198 Troubleshooting and Maintenance Indicator status Network/Unit status Comments Segment Troubleshooting with the DeviceNet Unit IndicatorsDetermining Operating Status from the Indicators Troubleshooting Errors Occurring in the DeviceNet Unit Error cate Indicators Gory Log Segment Hex Master Errors Use slaves with input and output areas of 200 bytes max Segment MS indicator NS indicator Error log HexSet the slaves’ node addresses again Inspect the slave and then create the scan list again 205 Check the following Unit Status Error Software Switch Setting ErrorsCPU Unit Status Error Network Errors Incorrect SettingMultiple Switches on Network Power Error Transmission Timeout Error Node Address Duplication ErrorMaster’s node address is also set on another node 0342 Memory Access Errors Message Monitoring Timer List Logic Error Likely CauseBus Off Detected Bus Off condition was detected 211 Reset the master scan list Memory Access Error Unit Number duplication CPU Unit Exchange ErrorsCPU Unit Faulty H2 CPU Unit Faulty H6 CPU Unit Memory FaultyCPU Unit Faulty Hb Table Not Registered Refresh Error Routing Table Logic ErrorThere is an error in the contents of the routing table Inspect the CPU Unit’s operating environment Likely Cause CPU Unit Watchdog Timer ErrorAn error occurred in the CPU Unit Slave Errors CPU Unit Fatal Error Output OFF ErrorReplace the CPU Unit Output OFF Bit A50015 was turned on in the CPU Unit Error Log Functions Error Log TableUnit Errors Special Unit Error Error Codes and Detail Codes Monitored and the data cannot be savedTime Information Unit, the time stamp will contain all zeroes 220 221 Troubleshooting CPU Unit’s ERR/ALM Indicator Lit or FlashingRemote I/O Communications Disabled Error Probable cause 3 I/O Link Problems Use the following table to troubleshoot I/O Link problems Use the following table to troubleshoot scan list problems Communications Error Operation SettingsTinuing/stopping communications for errors Inspection Maintenance and ReplacementCleaning Replacing Faulty Units Creating a New Network File Software Switches Unit No. Set on rotary switches on front panel 0 toAllocation Differences from C200H DeviceNet Master Units Word address Bit Status Areas Master Status AreaDeviceNet Unit DRM21 status C200HX Unit Unit Mas Appendix a C200HX Unit Unit Mas Word Series Communications Cycle Time Present Value Registered Slave TableCS1W CJ1W Replacing Ladder Programs from C200HW-DRM21-V1 Normal Slave TableBit CS/CJ Series CS/CJ Series C200HS Message Communications in Ladder Programs Replace the addresses as shown in the following tableArea type C200HW-DRM21-V1 This Unit CS1W Remarks Instructions C200HW-DRM21-V1 This Unit CS1W Remarks Connection Characteristics DeviceNet Connections Connections Using Allocations Setting Connection TypeUser-set allocations Using Configurator Allocation method Contents Connection Path Fixed Allocation or User-set Allocations Using DMConnection path settings cannot be made Master COS Send Switch 239 Reset Resets restarts the DeviceNet UnitResets the DeviceNet Unit There are no responses for this command Reads the internal status of the DeviceNet Unit Baud rateSpace Test Data Command, Response Echoback Test Read Error History Reads the error history saved in the DeviceNet Unit Error History Clear Appendix C Appendix D Outline of Functions Backing Up Unit Setup FilesRestoring Unit Setup Files Saving Files from Configurator to Memory Card File Names Multi-vendor Applications Connecting another Company’s Slaves to an Omron MasterConnecting an Omron Slave to another Company’s Configurator ID content Get read Set write Value Master Unit Device ProfileObject Mounting Identity Object 01 Hex Appendix E DeviceNet Object 03 HexConnection Object 05 Hex MAC ID ID content Get Set Value Read Write Section Information Max. No. of instances Number of output bytes used by Slave 256 ACK Format Transport class trigger PC Object 2F HexCommunications type Instance type DeviceNet service Parameter option TIM/CNT PC area Refresh area type Refresh address Explicit Message Send When the explicit message execution failed or timed outCommand Command code Appendix F Index Index 265 266 Revision History Cat. No. W380-E1-2