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103
CHAPTER 7 COMMUNICATION OF THE ETHERNET ADAPTER MODULE
7
7.2 Communication Using the On-demand Function
7.2.7 Example of on-demand data sending
(c) On-demand data to be sent
(d) Program
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Request destination
module
I/O number
For future
extension
Request
data length
Monitoring timer Command Subcommand Send data
Network
number
Station
numberSubheader Serial number Fixed value
Clear control data.
Connection No.
Frame setting format
Serial number
Send data format
Send data length
Send data
Obtain Open completion signal of the
connection.
Output of when opening of the
connection is not completed
REMFR instruction error output
Read Send completed flag.
REMFR instruction error output
Check Send completed flag.
Output of when a value stored in
Send completed flag is not 0