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Omron CJ1W-ETN21 operation manual System Configuration, Close Request during Receive Request

Models: CJ1W-ETN21

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Using Socket Services with CMND(490)

Section 6-8

■CLOSE REQUEST during RECEIVE REQUEST

RECEIVE REQUEST	CLOSE REQUEST
command received	command received

Port Enabled Flag	1
Port Enabled Flag	0
CMND(490) (RECEIVE REQUEST)
response command
CMND(490) (CLOSE REQUEST)
response command
Receive Flag	1
Receive Flag	0
Close Flag	1
Close Flag	0
Opening Flag	1
Opening Flag	0

Results storage area for

RECEIVE REQUEST

Results storage area for

CLOSE REQUEST

Running

Running

Normal response code

Normal response code

Store error response code

Store normal response code

Note The timing shown in the above diagram occurs if a CLOSE REQUEST com- mand is executed during SEND REQUEST command execution. The timing shown in the diagram also applies if a CLOSE REQUEST command is exe- cuted during OPEN REQUEST command execution, with the exception of the status of the Opening Flag.

6-8-8 TCP/IP Communications Programming Example

The following programming example illustrates transferring 100 bytes of data between an Ethernet Unit and a host computer using TCP/IP communications.

System Configuration

The system configuration for the program example and the Ethernet Unit system setup are shown below. To establish a TCP connection, the Ethernet Unit is passively opened and the host computer actively opened.

Host computer

Ethernet Unit

PLC

IP address:	196.36.32.55	IP address:	196.36.32.101
Port number:	4096	Port number:	4096
		FINS network address:	01 Hex
		Node address:	01 Hex
		Unit number:	10 Hex

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Omron CJ1W-ETN21 operation manual System Configuration, Close Request during Receive Request

Contents

Ethernet Units Construction of Applications Revised November  Omron Omron Product ReferencesPage Table of Contents FTP Server Index 207 Revision History 215 Table of Contents Information on how to manage and use IP addresses Information on setting communications using CX-ProgrammerCommands Section ContentsRelevant Manuals Manual Model Name Contents NumberXiii Xiv Read and Understand this Manual Application Considerations Disclaimers Xviii Unit Versions Notation of Unit Versions on ProductsConfirming Unit Versions with Support Software Lowing table Unit Version NotationPrecautions General Precautions Safety PrecautionsIntended Audience Safety Precautions Application Precautions Operating Environment PrecautionsApplication Precautions Applicable Directives Conformance to EC DirectivesConcepts EMC DirectivesSection Service Main functions Counterpart device Reference Ethernet Unit Communications ServicesFunctions Listed by Purpose Acquired for the Ethernet UnitUnit setting tag Communications Protocol used Situation when used ReferenceTable of Protocols SectionCommon Protocol Settings Contents DefaultSmtp 2 POP 3 DNS Section Section Mail Send Function Introduction Mail Send Function OverviewAdvantages DescriptionMail Send Function Details Comparison with the Earlier Mail Send FunctionMail Send Functions Compatibility with Earlier Models Contents of E-mail Body Trigger condition Text entered as subject Following header information is includedEthernet Unit Information Words value has changed Channel data has changed from XX toEthernet Unit information is always included in the e-mail Optional InformationExtension Content Error Log Information Status InformationAttached File Details Memory Data 6,000 Words MaxSummary of E-mail Body Information and Attached Files File Data 1 MB MaxData sent Body/Attached file Mail body Mail Send Function Specifications Function SpecificationsSpecifications Procedure Using the Mail Send FunctionDetails of the Available Mail Triggers Classification Trigger typeTransferring the settings data Settings Required for the Mail Send FunctionSetting Setting requirement Reference Unit SetupUsing the Mail Send Function Set up to 2 destination mail addresses Mail AddressSend Mail Mail Address Specification Required Send Mail Condition SettingsData Sent by Mail When Required Data Sent in E-mail Body Data Sent in an Attached FileAttached File Name Send Mail Trigger Type Setting RequiredMail Send Function Status Send Mail StatusSend Mail Status Mail Send Switch, Accessing Memory/Sending Mail Flag Mail Send Switch Bit 03 of nBit numbers Status Memory Data Formats Accessing Memory/Sending Mail Flag Bit 01 of n+17IOM Format TXT FormatCSV Format Attached File Transfer TimesIdentifying and Correcting Mail Send Function Errors Mail Send Function ErrorsAccess Times for CS1 and CJ1 CPU Units Access Times for CS1-H and CJ1-H CPU UnitsError Log Error Codes for the Mail Send Function Troubleshooting Mail Send Errors with LED IndicatorsError Meaning Detailed error code Correction Probable cause CorrectionInitial Settings Example Make the Unit Setup Settings from the CX-ProgrammerInitial Server Settings Example ApplicationSend Condition Setting Destination Mail Address SetupAutomatic Transmission when Send Condition is Satisfied Transfer the CPU Bus Unit Setup SettingsExample Send e-mail when W300 bit 00 goes from OFF to on Send when there is a Change in the CPU Units StatusReceive Mail Function Mail Receive Function Overview Configuration of the MailAdvantages DescriptionCommand Parameters Table of Remote Mail CommandsCommand Execution Results Attached File DataMail Receive Function Specifications SpecificationReceived E-mail Response E-mail Using the Mail Receive Function Tion Settings Required for the Mail Receive FunctionReceive Mail Tab Posting Mail Address Protection SettingReceive Command Setting Receive Attached File SettingCommand Format Remote Mail Command DetailsFormat Response FormatFileWrite File Write Command FormatFunction Mounted in the CPU UnitFileRead File Read Card mounted in the CPU Unit FileDelete File DeleteFileList File List Read EM file memory or a Memory Card mounted in the CPU UnitResponse Format Details UMBackup User Memory Backup Command Format DetailsMemory or a Memory Card mounted in the CPU Unit Or a Memory Card mounted in the CPU Unit PARAMBackup Parameter Area BackupUnits I/O memory. The data is written in word units IOMWrite I/O Memory WriteSubject Body Units IOMRead I/O Memory ReadReIOMRead Changes the CPU Units operating mode ChangeMode Operating Mode ChangeBus Unit or Special I/O Unit ErrorLogRead Error Log ReadErrorLogClear Error Log Clear MailLogRead Mail Log Read Since power was turned on or the mail log was clearedNet Unit MailLogClear Mail Log ClearTest Mail Test FinsSend Fins Command Send Response ListResponse Response Status Description Code Accessing Memory/ Receiving Mail Flag Bit 02 of n+17 Accessing Memory/Receiving Mail FlagMail Receive Function Status IOM FormatCSV Format TXT FormatAccess Times for CS1-H CJ1-H CPU Units Access Times for CS1 CJ1 CPU UnitsMail Receive Function Errors Identifying and Correcting Mail Receive Function ErrorsTroubleshooting Mail Receive Errors with LED Indicators Hex 1st byte 2nd byte Error code Meaning Detailed error code CorrectionDNS Server IP Address Setting DNS Tab, When Required Initial Settings for the Mail Receive FunctionItem name Example Send Remote Mail Commands Reading Data from a CPU Unit Data AreaBacking Up the CPU Units User Program Memory Card FTP Server Overview SpecificationsConnecting to the FTP Server FTP Server Function DetailsFile Types FTP File Transfer Mode Using the FTP Server FunctionSetup Tab List of Settings Required for the FTP Server FunctionCX-Programmer Settings Setting conditions Tab Setting Details Default valueConfidential FTP Server Application ExampleTable of Commands Using FTP CommandsUsing the Commands OpenUser DirRename Rmdir MkdirPwd CdupGet TypeMget PutMdelete DeleteClose ByeError Messages and FTP Status Error MessagesMessage Meaning FTP indicator Meaning FTP IndicatorChecking FTP Status FTP Status FlagFile Memory Using File MemoryFile Names DirectoriesFile type File name Extension Contents Description File Names Handled by CPU UnitUnit 4 I/O Memory Data Format Initializing File MemoryMemory Initialization method Data format Use of CRs and CR positionSection 9ABC CS1 CPU Units/CJ1 CPU Units FTP File Transfer TimeCS1-H CPU Units/CJ1-H CPU Units File system Memory Card EM File MemoryUnix Application Example Enter the login nameChange data type to binary Change to the Memcard directoryTransfer the file RESULT.IOM to the workstation Write the file PLAN.IOM to the Memory CardSection Automatic Clock Adjustment Function CPU Unit Conditions OverviewUsing the Automatic Clock Adjustment Function Settings Setting conditions Reference Settings Required for Automatic Clock Adjustment FunctionAuto Adjust Time Automatic Clock Adjustment Error Processing Automatic Clock Adjustment SwitchAutomatic Clock Adjustment Sntp Errors Automatic Clock Adjustment Switch Bit 04 of nAutomatic Clock Adjustment Error Processing CPU Unit error Socket Services Page Overview of Socket Communications from Ethernet Units Using Sockets with the Ethernet UnitWhat are Sockets? Socket Port NumbersDifferences between TCP and UDP Protocol OverviewOpening TCP Sockets TCP CommunicationsPassive Open and Active Open TCP Communications ProcedureFragmentation of Send Data Socket Service Functions Protocol Socket Service Request CMND490 Using Socket Services with Socket Service Request SwitchesSpecific Socket Service Functions Using Socket Services with CMND490Command code Name Protocol Socket service requestDifferences with Previous Models Socket Service Function GuideManipulating Dedicated Control Bits Executing CMND490Settings Required for Socket Service Function Using Socket Service FunctionsCX-Programmer Setting Setting requirements Unit Setup Tab Manipulating Dedicated Control BitsDetails Default value Setup109 Socket Service Status CIO Area AllocationsUDP/TCP Socket Status Ethernet Unit to CPU Unit DM Area Allocations Bit Switch Status Manipulated Unit operationProcedure Application ProcedureTCP Connection Status Ethernet Unit to CPU Unit Number Status MeaningPrecautions Socket Services and Socket StatusProgram Flow Error EvaluationSocket Service Parameters Use of the parameters by the socket service Parameter SettingsUDP Socket Services TCP Socket ServicesSocket Option ParametersUDP/TCP Socket No Local UDP/TCP Port NoRemote UDP/TCP Port No Following specifications can be usedTime Out Time Number of Bytes to Send/ReceiveFollowing diagram Socket Service Request SwitchesUDP Socket Open Request Response CodesUDP Socket Receive Request Response Meaning CodeUDP Socket Close Request UDP Socket Send RequestTCP Socket Active Open Request TCP Socket Passive Open RequestDrinuse TCP Socket Receive RequestTCP Socket Send Request TCP Socket Close Request Timing ChartsClosing during Other ProcessesForce-close Switch Close Request Switch8 TCP/IP Communications Programming Example System ConfigurationData Flow Basic OperationsProgram Memory Map DM AreaCIO Area TCP Passive Open Programming Example130 9 UDP/IP Communications Programming Example Programming example uses the following system configurationCIO 000000 is turned on to request opening a UDP socket from Tion on errors133 134 135 Using Socket Service Using Socket Services with CMND490137 Command Code Basic Fins Command FormatSocket Number Results Storage AreaCommunications Timing Chart Response Codes in the Command ResponseSocket Service Timing Chart Response Codes in the Results Storage Areas140 Close Request during Receive Request System ConfigurationBasic Operations Data FlowAre structured Program Memory Maps144 145 146 147 148 149 150 151 152 153 154 UDP and TCP Socket Services Precautions in Using Socket ServicesUDP Socket Service TCP Socket ServicePrecautions in Using Socket Service Request Switches Maximum Transmission Delays Ignoring other Network Delays TCP Socket Services Using CMND490 CS/CJ CPU UnitsCS-H/CJ-H CPU Units Calculation Using Fins Communications to Create Host Applications Communications On an Ethernet Network Overview of Fins CommunicationsFins Communications Service Specifications for Ethernet Using the FINS/UDP and FINS/TCP MethodsFins Frames Fins Command Frame FormatFins Response Frame Format Fins Header InformationFINS/UDP Method FINS/UDP FeaturesFINS/UDP FINS/UDP Frame Format UDP Port Numbers forProcedure for Using Sending Commands from a Host Computer Designating Remote AddressesCommunications Parameters Used by Host Computer Mand, the command will be resent By sending a Fins command Memory Area READ, command codeFINS/UDP Sample Program Operation Overview15 * FINS/UDP Communications Sample Program Sample Program169 170 FINS/TCP Method FINS/TCP FeaturesFINS/TCP Frame Format TCP Port Number forFINS/TCP Connection Numbers Communications FINS/TCP Connection Status Word n+23Age them in an internal table Automatic Allocation Fins Node Addresses Automatic Allocation Procedure175 FINS/TCP Tab Setup TabFins Node Address Data Send Client to Server Command FINS/TCP Mode SpecificationsFins Node Address Data Send Server to Client Command FINS/TCP HeadersFins Frame Send Command Following table shows the list of error codesError code Details Hexadecimal Command Fins Frame Send Error Notification CommandNormal Operation Connection SequenceACK FIN Error Connection Sequence182 183 Host computer Remote node From onwards, the connection is established againFINS/TCP Sample Program 186 187 188 189 190 191 Write Command Delay Time Maximum Transmission Delays Writing/Reading to CPU UnitTransmission Delay Receive Processing Command CPU Bus Unit Service CycleTransmission Processing Read Command Delay Time704 ms Response194 Parameter Value Description Ethernet Network ParametersAppendix a Appendix B Buffer ConfigurationNetwork Memory Status Meaning TCP Status TransitionsAppendix C Space Ascii CharactersAppendix D Settings after Replacing an Ethernet Unit MaintenanceSettings After Replacing a CPU Replacing an Ethernet UnitAppendix E Inspections ItemsTools Required for Inspection Appendix F Numerics Index 209 210 211 212 213 214 Revision History Revision code Date Revised contentRevision History Regional Headquarters Omron Corporation Control Devices Division H.QAuthorized Distributor