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Omron CS1W-ETN21 Transmission Delays, SEND090, CPU Bus Unit Service Cycle Local Node

Models: CS1W-ETN21

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Communicating between OMRON PLCs

Section 6-6

6-6-6 Transmission Delays

The methods of computing the maximum time required from execution of the SEND(090), RECV(098), and CMND(490) instructions until processing is completed are described in this section.

SEND(090)

The transmission delay for the SEND(090) instruction can be calculated using the following equation, which is illustrated in the following diagram.

Max. delay =	CPU Bus Unit service cycle (local node)
	+CPU Bus Unit service processing time (local node)
	+Transmission processing time
	+Transmission Delays
	+Reception processing time
	+CPU Bus Unit service cycle (remote node)
	+CPU Bus Unit service processing time (remote node)

SEND(090) executed in user program

CPU Bus Unit

service cycle (local node)

CPU Bus Unit service processing time (local node)

Transmission processing time

Transmission Delays

Reception processing time

CPU Bus Unit

service cycle (remote node)

CPU Bus Unit service processing time (remote node)

CPU data set

processing time (remote node)

Maximum transmission delay

CPU Bus Unit Service Cycle (Local Node)

The processing time will be as follows, depending on the CPU processing mode settings at the CPU Unit:

CPU execution mode	Processing time considerations
Normal Mode	CPU Unit cycle time
Priority peripheral ser-
vicing
Parallel processing with
synchronous memory
access
Parallel processing with	0.2 ms + peripheral servicing time (1 ms max. of peripheral
asynchronous memory	servicing time for each Special I/O Unit, CPU Bus Unit,
access	peripheral port, RS-232C port, and Inner Board)

For details, refer to the CPU Unit operation manual.

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Omron CS1W-ETN21 operation manual Transmission Delays, SEND090, CPU Bus Unit Service Cycle Local Node

Contents

Ethernet Units Construction of Networks Revised January Page Omron Product References  OmronNotation of Unit Versions on Products Unit VersionsConfirming Unit Versions with Support Software Unit Version Notation Lowing tableViii Table of Contents Ethernet Unit Memory Allocations Index 249 Revision History 257 Xii Section Contents About this ManualManual Model Name Contents Number Relevant ManualsWS02-CXPC1-EV6 CXONE-AL@@C-ECQM1H-PRO01-E CQM1-PRO01-EXvi Read and Understand this Manual Application Considerations Disclaimers Page Precautions Safety Precautions General PrecautionsIntended Audience Operating Environment Precautions Application PrecautionsApplication Precautions Conformance to EC Directives Applicable DirectivesConcepts EMC DirectivesLow Voltage Directive Section Overall System Configuration Example Connecting the CX-Programmer to PLCs Online via EthernetEthernet Unit Function Guide Determining the ObjectivesSection Exchanging Data between Omron PLCs using Ethernet ReferenceOperation Receiving E-mail Data and Files at the PLC Operation Use the mail receive functionLadder program Ulating control bits or the CMND490 instructionFeatures Simplified Socket ServicesCompatibility and Speed Various Protocols Available on EthernetImproved Fins Message Communications Additional E-mail FunctionsAutomatic PLC Internal Clock Adjustment Specification of Servers by Host NameUse Web Function to Read Ethernet Unit Settings and Status Network Connection with Controller LinkSystem Configuration System ConfigurationSetup Area and Related Peripheral Devices Devices Required for Constructing a NetworkRouting Table Area Specifications General SpecificationsSpecifications CS-series Ethernet UnitCJ-series Ethernet Unit Dimensions Software Configuration Fins Communications Service PLCs, mode changes, and file memory operationsOverview of Communications Functions Basic FunctionsUpgraded Functions Socket ServicesManipulating Dedicated Control Bits Executing CMND490 Improved TCP Socket Interface FTP Server Function Mail Send FunctionMail Receive Function Automatic Clock Adjustment Function Specifying Servers by Host NameNomenclature and Functions Component NamesCS-series Ethernet Units CS1W-ETN21 100Base-TXCJ1W-ETN21 100Base-TX CJ-series Ethernet UnitsFront IP Address IndicatorsSubnet Mask Indicator Color Status Meaning Previous models New models Comparison with Previous ModelsCS1W-ETN11 CS1W-ETN21 CJ1W-ETN11 CJ1W-ETN21 Unit Version Upgrade Information Upgrade DetailsUnit Version FINS/UDPInstallation and Initial Setup Overview of Startup Procedure TablesSwitch Settings Setting the Unit NumberSetting the Node Address Setting rangeUnit CJ-series Ethernet UnitsMounting to a CS-series PLC Mounting to a PLCMounting to a CJ-series PLC Network Installation Basic Installation PrecautionsPrecautions Precautions on Laying Twisted-pair CableBasic Precautions Recommended ProductsConnect the hubs using special cables or special racks Cascade ConnectionsStack Connections Hubs per stackUsing Contact Outputs Common to All Units Mounting LocationCable Location Hub MeasuresConnecting to the Network Ethernet ConnectorsConnecting the Cable Connector pin Signal name Abbr Signal directionConnecting Programming Devices to the PLC Creating I/O Tables1 I/O Table Overview DevicesProcedure for Creating I/O Tables Connecting Programming Devices Programming ConsoleCX-Programmer Version 3.20 or Higher and CX-Integrator Model number Key Sheet required Recommended cable requiredUnit Setup Procedure Section Using the Web Browser Setting Function 3.. . Connect to the Ethernet Unit from the Web browser Section Basic Settings IP AddressDefault Setting Unit SetupOperation status +98 +99Broadcast Settings Setting ContentsSubnet Mask Class Subnet maskTCP/IP Keep-alive Setting SettingsBaud Rate Set the baud rateUnit Setup for Particular Applications Socket ServicesCX-Programmer tab Settings CX-Programmer tab Setting Setup Keep-aliveAutomatic Clock Adjustment Mail ReceptionSmtp POPPing Command CX-Programmer Setting item TabCommunications Test Ethernet UnitConverting from Previous Models Host ComputerMethod Application ExamplesSpecifications in ETN11 mode Checking the CPU Bus Unit System Setup Area Format Changing the CPU Bus Unit System Setup Area Format Bit address Format classificationUsing the CX-Programmers Unit Setup If an Error Occurred in the Mode Change Node address IndicatorsNot lit Not lit LitConverting from ETN21 Mode to ETN11 Mode Section CX-Programmer Unit Setup Setup Contents DefaultConfidential FINS/TCP Connection Setup FINS/TCPFollowing settings can be made for each connection number Tion of ApplicationsDNS Server Setup DNSSmtp Server Setup SmtpPOP Server Setup POPDestination Mail Address Setup Mail AddressSend Mail ETN CPUPosting Mail Address Protection Setting Receive MailReceive Attached File Setting Receive Command SettingAuto Adjust Time Sntp Server SetupFor details, refer to Automatic Clock Adjustment Function Http Server SetupHttp Section Ethernet Unit Memory Allocations CIO Area Allocations Socket Force-close Switch Bit Mail Send Switch BitAutomatic Clock Adjustment Switch Bit Unit Control Bits CPU Unit to Ethernet UnitOpening Flag Bit Status of UDP/TCP Sockets 1 to 8 Ethernet Unit to CPU UnitBit Flag Status Manipulated Unit operation Reference Results Storage Error Flag Bit Receiving Flag BitSending Flag Bit Closing Flag BitService Status Ethernet Unit to CPU Unit Accessing Memory Sending Mail BitFTP Status Bit Bit Name Status Manipulated Unit operation ReferenceAccessing Memory Receiving Mail Bit System Setup Format Bits 8 toError Status Ethernet Unit To CPU UnitSntp server error Unit Bit Switch Status Manipulated Unit operation Reference FINS/TCP Connection StatusDM Area Allocations These bits show the status of FINS/TCP connectionsSend Mail Status Send Mail Status 1, 2 Ethernet Unit to CPU UnitBits Status +1 to m+8 Number of Bytes Received 0000 to 07C0 hex IP Address Display/Setting Area Application Setting device Setting area RemarksWords Bits Name Function Settings Auxiliary Area DataArea of PLC memory that are related to the Ethernet Unit Read-only Bits/WordsRead/Write Bits User Settings Bits Name Description SettingsSection Determining IP Addresses IP Address Configuration IP AddressesAllocating IP Addresses Class Number of networks Number of hostsSubnet Masks Ethernet Unit IP Address SettingsClass Subnet Mask value Specifying Nodes in Fins Communications Services IP Addresses in Fins CommunicationsAllocating Addresses to Ethernet Units Ethernet Unit Fins Message ReceptionAutomatic Generation Method Dynamic/Static IP Address Table Method and Combined MethodRemote Fins node Remote IP address Connection Remote port Example Number ExamplePairing Addresses in Internal Tables FINS/UDP Communications MethodsAutomatic Generation Dynamic Automatic Generation StaticExample Combined MethodProhibiting Dynamically Changing Remote IP Addresses Using the ETN11- compatible Mode Pairing in the FINS/TCP Method FINS/TCP Communications MethodInternal Processing Local Device Is FINS/TCP ClientLocal Device Is Server Setting FINS/TCP ConnectionsLocal Device Is a Client Automatic IP Address Setting by Dhcp Service Application ExamplesResponding to Computers with Changed IP Addresses FINS/UDP Communications MethodRelated Products and Communications/Setting Methods Models Supporting Automatic Generation Method DynamicModels Supporting IP Address Table Method Models Supporting Automatic Generation Method StaticModels that Can Use the Combined Method Private and Global Addresses Private and Global AddressesFINS/UDP and FINS/TCP 108 Conditions for Using Communications Applications Using a Private Address for the Ethernet UnitFins Communications Service Automatic Clock Adjustment Transferring FilesSending Mail Receiving MailEthernet Unit with a Global Address Considerations, on using POP before Smtp UDP/TCP port number default 53 to be used for DNS cannot beMail via the intranet, even if it as a private address PLC can receive the Ethernet Units IP address from the POP3Fins Communications Overview of Fins Communications Using the FINS/UDP and FINS/TCP MethodsCommunications On an Ethernet Network Fins Communications Service Specifications for Ethernet FINS/UDP Method FINS/UDP FeaturesOverview Procedure for Using FINS/UDP UDP Port Numbers forFINS/TCP Features FINS/TCP MethodTCP Port Number for FINS/TCP Connection NumbersProcedure FINS/TCP Connection Status Word n+23Communications Internal tableSetup Tab Procedure for Using FINS/TCPFINS/TCP Tab Creating Routing Tables Routing Table OverviewLocal Network Table Relay Network TableConnecting and Using a Peripheral Device for the PLC Routing Table Setting Examples Example 2 Three Interconnected NetworksExample 3 All Nodes Using Fins Applications System Configuration Example 1 No RoutingSettings for target PLC PLC1s Change PLC Dialog Box CX-Programmer CX-ServerCX-Programmers Unit Setup Setup Tab 128 System Configuration Example 2 Using Routing Tables Routing Table Settings and Transfer to Each PLCSettings for target PLC PLC3s Change PLC Dialog Box PLC3Overview of Setup Methods Starting FinsGateway Settings Etnunit Driver SetupFinsGateway Local Network TableNetwork Tab Communication Unit Tab132 133 Starting FinsGateway Etnunit Service ConditionsCommunications Specifications CX-Programmers Unit SetupNot set. All defaults are used Communicating between Omron PLCsPLC Communications Data Areas Area RangeSEND090 Using SEND090, RECV098, and CMND490Ning word D at the remote destination node node address N RECV098 CMND490 Hex 2 s Destination node number N To FE HexCommands Addressed to CS/CJ-series CPU Units Usage Command Name Function CodeWriting Programs Flag name Address Contents Word Bits Communications Port Error Flag and Completion Codes CMND490 Word ContentsCommunications Port Completion Codes Timing of Communications Flag Changes144 Program Example 146 Transmission Delays CPU Bus Unit Service Cycle Local NodeCPU execution mode Processing time considerations SEND090CPU Bus Unit Service Processing Time Local Node Transmission DelayCPU Bus Unit Service Cycle Remote Node Transmission Processing TimeCPU Bus Unit Service Processing Time Remote Node CPU processing mode Processing time considerations SettingsExample Calculations CalculationEquation illustrated in the following diagram RECV098Transmission processing time command Transmission Delay CommandReception processing time command Response152 Conditions for High Traffic Precautions on High Traffic in Fins CommunicationsCalculations Avoiding Errors due to High Traffic Fins Commands Addressed to Ethernet Units Command Codes and Response Codes Command Code ListResponse Code List Command code NameSocket Applications FormatCommunications Type ParametersCIO Command/Response Reference ResetBroadcast Address Setting IP Address Conversion Method SettingFINS/UDP Port Number Setting Controller Data ReadController Status Read Error Flags Response IP Address ErrorIP Address Table Error IP Router Table ErrorInternode Echo Test Eeprom ErrorRuns the echo test between specified nodes Command Block Response Block Parameters Test Data Command, ResponseBroadcast Test Results Read Broadcast Data SendError LOG Read Test Data CommandReads the error log Bytes can be specifiedError LOG Clear Error Log Data ResponseError Code, Detailed Information Minute, Second, Day, Hour, Year, MonthResults Storage Format UDP Open RequestRequests processing to open a socket UDP Socket Number Command Results Storage Area Command UDP Receive RequestRequests that data be sent from a UDP socket EnobufsResults Storage Area Response Codes UDP Send RequestRequests that data be received by a UDP socket 170 UDP Close Request Requests processing to close a socketPassive TCP Open Request Response code Description 0000 NormalRemote IP address Remote TCP port Description Econnreset Active TCP Open RequestEconnaborted Tunreach175 Eacces DrnotavailTCP Receive Request Requests that data be sent from a TCP socketRequests that data be received at a TCP socket TCP Send RequestEtimedout Results Storage Format Parameters Enetunreach TCP Close RequestEhostunreach Ping Destination IP Address Command Timeout Value CommandResponse Block Parameters FINS/TCP Connection Remote Node Change Request Ping CommandRemarks FIFINS/TCP Connection No. Command Response FINS/TCP Connection Status Read2232 Reads the FINS/TCP connection statusNumber of Records Command IP Address Table WriteRemote TCP Port Number Response TCP Transitions Response Writes the IP address tablePrecautions Response Codes IP Address Table Records CommandIP Address Write Fins Node AddressIP Address Table Read Reads the IP address tableIP Router Table Read Reads the IP router tableIP Network Address Router IP AddressProtocol Status Read Reads the Ethernet Unit protocol statusIP Status Response ValueType number Description Connection Information 60 Bytes Send Information 40 Bytes Receive InformationMemory Status Read Memory Status Response Socket Status Read Address Information Read TCP Transitions 4 bytesReads Fins node addresses and IP addresses Number of Addresses ResponseIP Address Read Node address set on the Ethernet Unit hexadecimalIP address set on the Ethernet Unit hexadecimal Fins Node Address ResponseSubnet Mask Response Troubleshooting Troubleshooting with Indicators Probably cause CorrectionError Status Word = CIO 1500 + 25 x unit number +18Logged Errors Error LogFollowing errors are recorded in the error log Error Log Table Error Log Error CodesError Log Location Fins Commands for Error Logs 204 205 206 207 208 Troubleshooting Procedures Startup ProblemsFins Communications Problems SEND090/RECV098/ CMND490 Is the control data For the instruction set Incorrectly?UDP Socket Problems General ProblemsProblems Opening and ClosingReception Problems Read Controller StatusTransmission Problems Is send Y processing not Finishing?TCP Socket Problems General ProblemsClosing Problems Opening ProblemsRefer to General Problems on 216 FTP Service Problems Connection ProblemsFile Transfer Problems ENDNetwork Connection Problems Status ReadMail Not being Sent A R TMail Not being Received A R TClock Not being Automatically Adjusted Flashing? Status bit ON?Troubleshooting with Response Codes Main code Sub-code Check point Probable cause RemedyController Status Read224 225 226 Network Relay Errors Results Storage Area Response CodesCodes stored in the Results Storage Area DevicesEisconn EnotconnEalready EmsgsizeResponse Unix error Description Probable remedy Code 230 Ethernet Network Parameters Parameter Value DescriptionPage Buffer Configuration Appendix BNetwork Memory TCP Status Transitions Status MeaningPage Ascii Characters SpacePage Maintenance Settings after Replacing an Ethernet UnitSettings after Replacing a CPU Replacing an Ethernet UnitPage Items InspectionsTools Required for Inspection Page Ethernet Unit Web Function Unit Setup FunctionsWeb Function List Appendix G POPWeb Function Password Using the Web Function Setting PasswordStatus Monitor Menu item Corresponding CX-Programmer functionAppendix G 247 248 Numerics Index 251 252 253 254 255 256 Revision History Cat. No. W420-E1-04 Revision codeRevision History Omron Corporation Control Devices Division H.Q Regional HeadquartersAuthorized Distributor