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MELSEC-
A
5 PRELIMINARY INFORMATION
(d) Initialization area (
R2
20H to 23H)
This area is used to store the initialization parameters in the master station,
or to read them from the master station.
This area is required during initialization, so use the default values.
1) Update timing
The data is updated at the following timing.
•
Immediately after the R2 detects that the initial data read request
signal (RY(n+1)9) has turned from OFF to ON.
(Update direction: R2 to master station)
R2
Transmit immediately after
R2 detects initial data read
request ON!
Master station
1) Initial data read
request ON!
2) Initial data read request
ON confirmed!
3) Initialization data
•
Immediately after R2 detects that the initialization request signal
(RYn4) has turned from OFF to ON.
(Update direction: master station to R2)
R2
Master station
1) Initialization
request ON!
2) Initialization request
ON confirmed!
Transmit after R2 detects
initialization request ON!
3) Initialization data