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Omron CJ1W-ETN21 operation manual Data Flow, Basic Operations

Models: CJ1W-ETN21

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Using Socket Services with CMND(490)

Section 6-8

Data Flow

The data will flow between the CPU Unit, Ethernet Unit, and host computer as shown in the following diagram.

Host

computer

(5) Processing in

host computer

Line	Ethernet Unit							CPU Unit
(Ethernet)						(1)			Request Switches
(Ethernet)

(4) Sent to line.								(2)	Execution bits turned ON (see Note)
								(2)	Execution bits turned ON (see Note)

							(3)		CMND(490) response
							(3)		CMND(490) response
							(6)		Results stored in results
							(6)		Results stored in results
						(7)			Execution bits turned OFF

Note Here, “execution bits” refer to CIO 000000 to CIO 000003, which are used in the ladder diagram to control execution of communications and are not sys- tem flags, such as the Port Enabled Flags (A20200 to A20207).

Basic Operations

•CIO 000000 is turned ON to request opening a passive TCP socket from the Ethernet Unit.

•CIO 000001 is turned ON to request closing the TCP socket from the Ethernet Unit.

•CIO 000002 is turned ON to request sending data from the Ethernet Unit. Data (100 bytes) is sent beginning at D02005.

•CIO 000003 is turned ON to request receiving data from the Ethernet Unit. The data that is received (100 bytes) is stored beginning at D04022.

•One of the bits between CIO 000100 and CIO 000103 will turn ON if an error occurs. Refer to 6-7-5 Socket Service Request Switches for informa- tion on errors. The following areas can be used to access details about errors:

CMND(490) response codes Response codes in results storage area

Network Communications Error Flags (A21900 to A21907) Completion codes (A203 to A210)

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Omron CJ1W-ETN21 operation manual Data Flow, Basic Operations

Contents

Ethernet Units Construction of Applications Revised November Omron Product References  OmronPage Table of Contents FTP Server Index 207 Revision History 215 Table of Contents Commands Information on setting communications using CX-ProgrammerInformation on how to manage and use IP addresses Section ContentsManual Model Name Contents Number Relevant ManualsXiii Xiv Read and Understand this Manual Application Considerations Disclaimers Xviii Notation of Unit Versions on Products Unit VersionsConfirming Unit Versions with Support Software Unit Version Notation Lowing tablePrecautions Safety Precautions General PrecautionsIntended Audience Safety Precautions Operating Environment Precautions Application PrecautionsApplication Precautions Concepts Conformance to EC DirectivesApplicable Directives EMC DirectivesSection Functions Listed by Purpose Ethernet Unit Communications ServicesService Main functions Counterpart device Reference Acquired for the Ethernet UnitTable of Protocols Communications Protocol used Situation when used ReferenceUnit setting tag SectionContents Default Common Protocol SettingsSmtp 2 POP 3 DNS Section Section Mail Send Function Advantages Mail Send Function OverviewIntroduction DescriptionComparison with the Earlier Mail Send Function Mail Send Function DetailsMail Send Functions Compatibility with Earlier Models Contents of E-mail Body Following header information is included Trigger condition Text entered as subjectEthernet Unit information is always included in the e-mail Words value has changed Channel data has changed from XX toEthernet Unit Information Optional InformationAttached File Details Error Log Information Status InformationExtension Content Memory Data 6,000 Words MaxFile Data 1 MB Max Summary of E-mail Body Information and Attached FilesData sent Body/Attached file Mail body Function Specifications Mail Send Function SpecificationsSpecifications Details of the Available Mail Triggers Using the Mail Send FunctionProcedure Classification Trigger typeSetting Setting requirement Reference Settings Required for the Mail Send FunctionTransferring the settings data Unit SetupUsing the Mail Send Function Mail Address Set up to 2 destination mail addressesSend Mail Data Sent by Mail When Required Data Sent in E-mail Body Send Mail Condition SettingsMail Address Specification Required Data Sent in an Attached FileSend Mail Trigger Type Setting Required Attached File NameSend Mail Status Mail Send Function StatusSend Mail Status Mail Send Switch Bit 03 of n Mail Send Switch, Accessing Memory/Sending Mail FlagBit numbers Status IOM Format Accessing Memory/Sending Mail Flag Bit 01 of n+17Memory Data Formats TXT FormatAttached File Transfer Times CSV FormatAccess Times for CS1 and CJ1 CPU Units Mail Send Function ErrorsIdentifying and Correcting Mail Send Function Errors Access Times for CS1-H and CJ1-H CPU UnitsError Meaning Detailed error code Correction Troubleshooting Mail Send Errors with LED IndicatorsError Log Error Codes for the Mail Send Function Probable cause CorrectionInitial Server Settings Make the Unit Setup Settings from the CX-ProgrammerInitial Settings Example Example ApplicationDestination Mail Address Setup Send Condition SettingExample Send e-mail when W300 bit 00 goes from OFF to on Transfer the CPU Bus Unit Setup SettingsAutomatic Transmission when Send Condition is Satisfied Send when there is a Change in the CPU Units StatusReceive Mail Function Advantages Configuration of the MailMail Receive Function Overview DescriptionCommand Execution Results Table of Remote Mail CommandsCommand Parameters Attached File DataSpecification Mail Receive Function SpecificationsReceived E-mail Response E-mail Using the Mail Receive Function Settings Required for the Mail Receive Function TionPosting Mail Address Protection Setting Receive Mail TabReceive Attached File Setting Receive Command SettingFormat Remote Mail Command DetailsCommand Format Response FormatFunction Command FormatFileWrite File Write Mounted in the CPU UnitFileRead File Read FileDelete File Delete Card mounted in the CPU UnitEM file memory or a Memory Card mounted in the CPU Unit FileList File List ReadResponse Format Details Command Format Details UMBackup User Memory BackupMemory or a Memory Card mounted in the CPU Unit PARAMBackup Parameter Area Backup Or a Memory Card mounted in the CPU UnitIOMWrite I/O Memory Write Units I/O memory. The data is written in word unitsSubject Body IOMRead I/O Memory Read UnitsReIOMRead ChangeMode Operating Mode Change Changes the CPU Units operating modeErrorLogRead Error Log Read Bus Unit or Special I/O UnitErrorLogClear Error Log Clear Since power was turned on or the mail log was cleared MailLogRead Mail Log ReadMailLogClear Mail Log Clear Net UnitTest Mail Test Response List FinsSend Fins Command SendResponse Response Status Description Code Mail Receive Function Status Accessing Memory/Receiving Mail FlagAccessing Memory/ Receiving Mail Flag Bit 02 of n+17 IOM FormatTXT Format CSV FormatAccess Times for CS1 CJ1 CPU Units Access Times for CS1-H CJ1-H CPU UnitsIdentifying and Correcting Mail Receive Function Errors Mail Receive Function ErrorsTroubleshooting Mail Receive Errors with LED Indicators Error code Meaning Detailed error code Correction Hex 1st byte 2nd byteInitial Settings for the Mail Receive Function DNS Server IP Address Setting DNS Tab, When RequiredItem name Example Reading Data from a CPU Unit Data Area Send Remote Mail CommandsBacking Up the CPU Units User Program Memory Card FTP Server Specifications OverviewFTP Server Function Details Connecting to the FTP ServerFile Types Using the FTP Server Function FTP File Transfer ModeCX-Programmer Settings Setting conditions Tab List of Settings Required for the FTP Server FunctionSetup Tab Setting Details Default valueFTP Server Application Example ConfidentialUsing the Commands Using FTP CommandsTable of Commands OpenDir UserRename Pwd MkdirRmdir CdupMget TypeGet PutClose DeleteMdelete ByeError Messages Error Messages and FTP StatusMessage Meaning Checking FTP Status FTP IndicatorFTP indicator Meaning FTP Status FlagFile Names Using File MemoryFile Memory DirectoriesFile Names Handled by CPU Unit File type File name Extension Contents DescriptionUnit Memory Initialization method Initializing File Memory4 I/O Memory Data Format Data format Use of CRs and CR positionSection 9ABC CS1-H CPU Units/CJ1-H CPU Units FTP File Transfer TimeCS1 CPU Units/CJ1 CPU Units File system Memory Card EM File MemoryEnter the login name Unix Application ExampleTransfer the file RESULT.IOM to the workstation Change to the Memcard directoryChange data type to binary Write the file PLAN.IOM to the Memory CardSection Automatic Clock Adjustment Function Overview CPU Unit ConditionsUsing the Automatic Clock Adjustment Function Settings Required for Automatic Clock Adjustment Function Settings Setting conditions ReferenceAuto Adjust Time Automatic Clock Adjustment Sntp Errors Automatic Clock Adjustment SwitchAutomatic Clock Adjustment Error Processing Automatic Clock Adjustment Switch Bit 04 of nAutomatic Clock Adjustment Error Processing CPU Unit error Socket Services Page What are Sockets? Using Sockets with the Ethernet UnitOverview of Socket Communications from Ethernet Units Socket Port NumbersOpening TCP Sockets Protocol OverviewDifferences between TCP and UDP TCP CommunicationsTCP Communications Procedure Passive Open and Active OpenFragmentation of Send Data Socket Service Functions Using Socket Services with Socket Service Request Switches Protocol Socket Service Request CMND490Command code Name Using Socket Services with CMND490Specific Socket Service Functions Protocol Socket service requestManipulating Dedicated Control Bits Socket Service Function GuideDifferences with Previous Models Executing CMND490CX-Programmer Setting Setting requirements Unit Setup Tab Using Socket Service FunctionsSettings Required for Socket Service Function Manipulating Dedicated Control BitsSetup Details Default value109 CIO Area Allocations Socket Service StatusUDP/TCP Socket Status Ethernet Unit to CPU Unit Bit Switch Status Manipulated Unit operation DM Area AllocationsTCP Connection Status Ethernet Unit to CPU Unit Application ProcedureProcedure Number Status MeaningSocket Services and Socket Status PrecautionsError Evaluation Program FlowSocket Service Parameters UDP Socket Services Parameter SettingsUse of the parameters by the socket service TCP Socket ServicesUDP/TCP Socket No ParametersSocket Option Local UDP/TCP Port NoTime Out Time Following specifications can be usedRemote UDP/TCP Port No Number of Bytes to Send/ReceiveSocket Service Request Switches Following diagramUDP Socket Receive Request Response CodesUDP Socket Open Request Response Meaning CodeUDP Socket Send Request UDP Socket Close RequestTCP Socket Passive Open Request TCP Socket Active Open RequestTCP Socket Receive Request DrinuseTCP Socket Send Request Closing during Other Timing ChartsTCP Socket Close Request ProcessesClose Request Switch Force-close SwitchData Flow System Configuration8 TCP/IP Communications Programming Example Basic OperationsDM Area Program Memory MapCIO Area Programming Example TCP Passive Open130 Programming example uses the following system configuration 9 UDP/IP Communications Programming ExampleTion on errors CIO 000000 is turned on to request opening a UDP socket from133 134 135 Using Socket Services with CMND490 Using Socket Service137 Socket Number Basic Fins Command FormatCommand Code Results Storage AreaSocket Service Timing Chart Response Codes in the Command ResponseCommunications Timing Chart Response Codes in the Results Storage Areas140 System Configuration Close Request during Receive RequestData Flow Basic OperationsProgram Memory Maps Are structured144 145 146 147 148 149 150 151 152 153 154 UDP Socket Service Precautions in Using Socket ServicesUDP and TCP Socket Services TCP Socket ServicePrecautions in Using Socket Service Request Switches TCP Socket Services Using CMND490 CS/CJ CPU Units Maximum Transmission Delays Ignoring other Network DelaysCS-H/CJ-H CPU Units Calculation Using Fins Communications to Create Host Applications Overview of Fins Communications Communications On an Ethernet NetworkUsing the FINS/UDP and FINS/TCP Methods Fins Communications Service Specifications for EthernetFins Response Frame Format Fins Command Frame FormatFins Frames Fins Header InformationFINS/UDP Features FINS/UDP MethodFINS/UDP Frame Format UDP Port Numbers for FINS/UDPProcedure for Using Designating Remote Addresses Sending Commands from a Host ComputerCommunications Parameters Used by Host Computer FINS/UDP Sample Program By sending a Fins command Memory Area READ, command codeMand, the command will be resent Operation OverviewSample Program 15 * FINS/UDP Communications Sample Program169 170 FINS/TCP Features FINS/TCP MethodTCP Port Number for FINS/TCP Frame FormatFINS/TCP Connection Numbers FINS/TCP Connection Status Word n+23 CommunicationsAge them in an internal table Automatic Allocation Procedure Automatic Allocation Fins Node Addresses175 Setup Tab FINS/TCP TabFins Node Address Data Send Server to Client Command FINS/TCP Mode SpecificationsFins Node Address Data Send Client to Server Command FINS/TCP HeadersFollowing table shows the list of error codes Fins Frame Send CommandError code Details Hexadecimal Fins Frame Send Error Notification Command CommandConnection Sequence Normal OperationError Connection Sequence ACK FIN182 183 From onwards, the connection is established again Host computer Remote nodeFINS/TCP Sample Program 186 187 188 189 190 191 Transmission Delay Maximum Transmission Delays Writing/Reading to CPU UnitWrite Command Delay Time Receive Processing Command CPU Bus Unit Service Cycle704 ms Read Command Delay TimeTransmission Processing Response194 Ethernet Network Parameters Parameter Value DescriptionAppendix a Buffer Configuration Appendix BNetwork Memory TCP Status Transitions Status MeaningAppendix C Ascii Characters SpaceAppendix D Settings After Replacing a CPU MaintenanceSettings after Replacing an Ethernet Unit Replacing an Ethernet UnitAppendix E Items InspectionsTools Required for Inspection Appendix F Numerics Index 209 210 211 212 213 214 Revision code Date Revised content Revision HistoryRevision History Omron Corporation Control Devices Division H.Q Regional HeadquartersAuthorized Distributor