Mitsubishi MELSEC L Series User Manual page 45

(c) Sample program
<<Fixed length mode setting>>
<<Connection No.1 open processing (Active)>>
<<Data sending>>
<<Data receiving>>
<<Connection No.1 close processing>>
*1 There are two kinds of TCP receive modes: TCP standard receive mode and TCP fixed-length receive mode.
For fixing the data size, run the program enclosed by a dotted line.
(It can be omitted when the data size is not fixed.)
For the TCP receive mode, refer to the section for the SP.SOCRMODE instruction. (
CHAPTER 6 SOCKET COMMUNICATION FUNCTION
1
*
Setting TCP receive mode to 1
Setting receive data size to 6
Changing TCP receive mode of
Connection No.1
Setting Execution/completion
type to 0
Connection No.1 open
Normal completion
Error completion
Setting send data length
Setting send data
Sending data to Connection No.1
Normal completion
Error completion
Receiving data
Normal completion
Error completion
Processing for disconnection
by the target
Connection No.1 close
Setting closing flag
Normal completion
Error completion
Resetting closing flag
Page 80, Section 6.4.8)
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