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MELSEC-F
FIXED BUFFER COMMUNICATION (WITH THE PROCEDURE EXIST
CONTROL METHOD)
6
6 - 16
(2) Outline of the program example
(a) Send program (Ethernet module-1st station)
1) After setting each parameter with FX Configurator-EN or a sequence
program and writing to the Ethernet module, select re-initial, power ON
the module again, or confirm that the initial processing is completed via
buffer memory operations.
2) Perform open processing (Active open) of connection No. 1.
(*1)
3) Communicate with the PLC using fixed buffer communication
(procedure exist sending).
4) After sending is complete, perform close processing of 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.
(b) Receive program (Ethernet module -2nd station)
1) After setting each parameter with FX Configurator-EN or a sequence
program and writing to the Ethernet module, select re-initial, 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. 1 wait for
an Active open request from the external device.
2) Transfer data from the external device using fixed buffer communication
(procedure exist sending).
3) The data received by the corresponding fixed buffer data area in the
Ethernet module is read to the PLC.