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2. TCP sockets
This is a sample program that issues the requests used with TCP sockets. It assumes that the
parameter set up and operating mode control requests (run mode/socket interface transmission
enable) have already completed.
a. TCP open request (passive)
This program issues a TCP open request (passive) for socket number 8 on the Ethernet Port.
This ladder program is executed by turning on the A contact on the R0630.
Parameters: 12544: 3100H, 00053: 0035H
341995909: 14627185H
Remote port IP address: 133.113.98.20
Remote port object socket TCP port number: 4000
Local port specified socket TCP port number: 4000
Open request timeout time: 1800 seconds
| /* TCP passive open request: executed when R0630 is set on. */ |
| |
|R0630 |
1|-| |-+[12544 MOV RW000][00053 MOV RW001]----------------------------|
| | /* Module designation, CMD number setup */
| | |
| +[00008 MOV RW002][00002 MOV RW003]----------------------------|
| | /* Socket identifier, open type setup */
| | |
| +[0341995909 DMOV RW005•RW004][04000 MOV RW006]----------------|
| | /* Remote port IP address and port number setup */
| | |
| +[04000 MOV RW007][18000 MOV RW008]----------------------------|
| | /* Local port number, timeout time setup */
| | |
| +[RW000 SEND RW010][RST R0630]---------------------------------|
| /* Turn R0630 off after request setup and completion. */
| |