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MELSEC-F
FIXED BUFFER COMMUNICATION (WITH THE NO PROCEDURE
CONTROL METHOD)
7
7 - 12
(2) Outline of the program example
(a) Send program (FX3U-1st station)
1) After setting each parameter with FX Configurator-EN or a sequence
program and writing to the Ethernet module, power ON the module
again, or confirm that the initial processing is completed via buffer
memory operations.
2) Perform open processing (Active open) for connection No. 1.
(*1)
3) Communicate data from the PLC using fixed buffer communication (no
procedure sending).
4) After data sending is complete, perform close processing for
connection No. 1.
(*1)
*1 Use the program example described in Subsection 5.6.1, "Active open
processing/close processing" for the sequence program that executes
the open processing/close processing.
Make sure to change the "Fixed buffer communication" setting from
"Procedure exist" to "No procedure".
(b) Receive program (FX
3U-2nd station)
1) After setting each parameter with FX Configurator-EN or a sequence
program and writing to the Ethernet module select re-initial and power
ON the module again, or confirm that the initial processing is completed
via buffer memory operations.
If the initial processing is normally completed, connection No. 2 waits for
an Active open request from the external device.
2) Transfer data from the external device using fixed buffer communication
(no procedure sending).
3) The data received by the corresponding fixed buffer data area in the
Ethernet module is read to the PLC.