Manuals / Omron / Computer Equipment / Network Card

Omron CJ1W-ETN21 operation manual 15 * FINS/UDP Communications Sample Program

Models: CJ1W-ETN21

1 242

Download 242 pages 30.9 Kb

Page 192

FINS/UDP Method

Section 7-3

Sample Program

1 #include <errno.h>

2 #include <stdio.h>

3 #include <sys/types.h>

4 #include <sys/socket.h>

5 #include <netinet/in.h>

6 #include <signal.h>

7

8#define FINS_UDP_PORT 9600

9#define SERV_IP_ADDR "196.36.32.100" /* Ethernet Unit IP ADDRESS*/

10#define MAX_MSG 2010

11#define RESP_TIMEOUT 2

12

13

14/*

15* FINS/UDP COMMUNICATIONS SAMPLE PROGRAM

16*/

17main(argc,argv)

18int argc;

19char *argv[];

20{

21int sockfd;

22 struct sockaddr_in ws_addr, cs_addr;

23char fins_cmnd[MAX_MSG], fins_resp[MAX_MSG];

24int sendlen, recvlen, addrlen;

25char sid = 0;

26extern recv_fail();

27

28/*GENERATE UDP SOCKET*/

29if ((sockfd = socket(AF_INET,SOCK_DGRAM,0)) < 0)

30err_exit("can't open datagram socket");

31

168

Image 192

Omron CJ1W-ETN21 operation manual 15 * FINS/UDP Communications Sample Program

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 Information on setting communications using CX-Programmer Information on how to manage and use IP addressesCommands Section ContentsManual Model Name Contents Number Relevant ManualsXiii Xiv Read and Understand this Manual Application Considerations Disclaimers Xviii Unit Versions Notation of Unit Versions on ProductsConfirming Unit Versions with Support Software Unit Version Notation Lowing tablePrecautions General Precautions Safety PrecautionsIntended Audience Safety Precautions Operating Environment Precautions Application PrecautionsApplication Precautions Conformance to EC Directives Applicable DirectivesConcepts EMC DirectivesSection Ethernet Unit Communications Services Service Main functions Counterpart device ReferenceFunctions Listed by Purpose Acquired for the Ethernet UnitCommunications Protocol used Situation when used Reference Unit setting tagTable of Protocols SectionCommon Protocol Settings Contents DefaultSmtp 2 POP 3 DNS Section Section Mail Send Function Mail Send Function Overview IntroductionAdvantages DescriptionMail Send Function Details Comparison with the Earlier Mail Send FunctionMail Send Functions Compatibility with Earlier Models Contents of E-mail Body Following header information is included Trigger condition Text entered as subjectWords value has changed Channel data has changed from XX to Ethernet Unit InformationEthernet Unit information is always included in the e-mail Optional InformationError Log Information Status Information Extension ContentAttached 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 Using the Mail Send Function ProcedureDetails of the Available Mail Triggers Classification Trigger typeSettings Required for the Mail Send Function Transferring the settings dataSetting Setting requirement Reference Unit SetupUsing the Mail Send Function Set up to 2 destination mail addresses Mail AddressSend Mail Send Mail Condition Settings Mail Address Specification RequiredData Sent by Mail When Required Data Sent in E-mail Body Data Sent in an Attached FileSend Mail Trigger Type Setting Required Attached File NameMail 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 Accessing Memory/Sending Mail Flag Bit 01 of n+17 Memory Data FormatsIOM Format TXT FormatAttached File Transfer Times CSV FormatMail Send Function Errors Identifying and Correcting Mail Send Function ErrorsAccess Times for CS1 and CJ1 CPU Units Access Times for CS1-H and CJ1-H CPU UnitsTroubleshooting Mail Send Errors with LED Indicators Error Log Error Codes for the Mail Send FunctionError Meaning Detailed error code Correction Probable cause CorrectionMake the Unit Setup Settings from the CX-Programmer Initial Settings ExampleInitial Server Settings Example ApplicationDestination Mail Address Setup Send Condition SettingTransfer the CPU Bus Unit Setup Settings Automatic Transmission when Send Condition is SatisfiedExample 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 Configuration of the Mail Mail Receive Function OverviewAdvantages DescriptionTable of Remote Mail Commands Command ParametersCommand Execution Results Attached File DataMail Receive Function Specifications SpecificationReceived 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 SettingRemote Mail Command Details Command FormatFormat Response FormatCommand Format FileWrite File WriteFunction Mounted in the CPU UnitFileRead File Read FileDelete File Delete Card mounted in the CPU UnitFileList 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 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 FinsSend Fins Command Send Response ListResponse Response Status Description Code Accessing Memory/Receiving Mail Flag Accessing Memory/ Receiving Mail Flag Bit 02 of n+17Mail Receive Function Status IOM FormatTXT Format CSV FormatAccess Times for CS1 CJ1 CPU Units Access Times for CS1-H CJ1-H CPU UnitsMail Receive Function Errors Identifying and Correcting Mail Receive Function ErrorsTroubleshooting Mail Receive Errors with LED Indicators Error code Meaning Detailed error code Correction Hex 1st byte 2nd byteDNS 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 Specifications OverviewConnecting to the FTP Server FTP Server Function DetailsFile Types Using the FTP Server Function FTP File Transfer ModeList of Settings Required for the FTP Server Function Setup TabCX-Programmer Settings Setting conditions Tab Setting Details Default valueFTP Server Application Example ConfidentialUsing FTP Commands Table of CommandsUsing the Commands OpenUser DirRename Mkdir RmdirPwd CdupType GetMget PutDelete MdeleteClose ByeError Messages and FTP Status Error MessagesMessage Meaning FTP Indicator FTP indicator MeaningChecking FTP Status FTP Status FlagUsing File Memory File MemoryFile Names DirectoriesFile type File name Extension Contents Description File Names Handled by CPU UnitUnit Initializing File Memory 4 I/O Memory Data FormatMemory Initialization method Data format Use of CRs and CR positionSection 9ABC FTP File Transfer Time CS1 CPU Units/CJ1 CPU UnitsCS1-H CPU Units/CJ1-H CPU Units File system Memory Card EM File MemoryEnter the login name Unix Application ExampleChange to the Memcard directory Change data type to binaryTransfer the file RESULT.IOM to the workstation 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 Switch Automatic Clock Adjustment Error ProcessingAutomatic Clock Adjustment Sntp Errors Automatic Clock Adjustment Switch Bit 04 of nAutomatic Clock Adjustment Error Processing CPU Unit error Socket Services Page Using Sockets with the Ethernet Unit Overview of Socket Communications from Ethernet UnitsWhat are Sockets? Socket Port NumbersProtocol Overview Differences between TCP and UDPOpening TCP Sockets 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 CMND490Using Socket Services with CMND490 Specific Socket Service FunctionsCommand code Name Protocol Socket service requestSocket Service Function Guide Differences with Previous ModelsManipulating Dedicated Control Bits Executing CMND490Using Socket Service Functions Settings Required for Socket Service FunctionCX-Programmer Setting Setting requirements Unit Setup Tab Manipulating Dedicated Control BitsSetup Details Default value109 Socket Service Status CIO Area AllocationsUDP/TCP Socket Status Ethernet Unit to CPU Unit Bit Switch Status Manipulated Unit operation DM Area AllocationsApplication Procedure ProcedureTCP Connection Status Ethernet Unit to CPU Unit Number Status MeaningSocket Services and Socket Status PrecautionsError Evaluation Program FlowSocket Service Parameters Parameter Settings Use of the parameters by the socket serviceUDP Socket Services TCP Socket ServicesParameters Socket OptionUDP/TCP Socket No Local UDP/TCP Port NoFollowing specifications can be used Remote UDP/TCP Port NoTime Out Time Number of Bytes to Send/ReceiveSocket Service Request Switches Following diagramResponse Codes UDP Socket Open RequestUDP Socket Receive 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 Timing Charts TCP Socket Close RequestClosing during Other ProcessesClose Request Switch Force-close SwitchSystem Configuration 8 TCP/IP Communications Programming ExampleData Flow Basic OperationsProgram Memory Map DM AreaCIO 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 Basic Fins Command Format Command CodeSocket Number Results Storage AreaResponse Codes in the Command Response Communications Timing ChartSocket Service 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 Precautions in Using Socket Services UDP and TCP 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 Overview of Fins Communications Communications On an Ethernet NetworkUsing the FINS/UDP and FINS/TCP Methods Fins Communications Service Specifications for EthernetFins Command Frame Format Fins FramesFins Response Frame Format Fins Header InformationFINS/UDP Features FINS/UDP MethodFINS/UDP Frame Format UDP Port Numbers for FINS/UDPProcedure for Using Sending Commands from a Host Computer Designating Remote AddressesCommunications Parameters Used by Host Computer By sending a Fins command Memory Area READ, command code Mand, the command will be resentFINS/UDP Sample Program Operation OverviewSample Program 15 * FINS/UDP Communications Sample Program169 170 FINS/TCP Features FINS/TCP MethodFINS/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 Procedure Automatic Allocation Fins Node Addresses175 Setup Tab FINS/TCP TabFINS/TCP Mode Specifications Fins Node Address Data Send Client to Server CommandFins 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 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 Maximum Transmission Delays Writing/Reading to CPU Unit Write Command Delay TimeTransmission Delay Receive Processing Command CPU Bus Unit Service CycleRead Command Delay Time Transmission Processing704 ms Response194 Ethernet Network Parameters Parameter Value DescriptionAppendix a Buffer Configuration Appendix BNetwork Memory TCP Status Transitions Status MeaningAppendix C Ascii Characters SpaceAppendix D Maintenance Settings after Replacing an Ethernet UnitSettings 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 code Date Revised content Revision HistoryRevision History Omron Corporation Control Devices Division H.Q Regional HeadquartersAuthorized Distributor