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MELSEC-
A
5 PRELIMINARY INFORMATION
(g) Monitor transmission area (
R2
2CH to 2FH,
R2
30H to 33H)
This area is used to store the data transmitted from the external device
using the monitor transmission function, from the master station to R2.
When not using the monitor transmission function, the transmission size
(
R2
2CH,
R2
30H) can be set to "0".
The default transmission size is 200
H, so the transmission size can be
reduced by setting it according to the No. of words being used.
1) Update timing (Update direction: Master station to R2)
The master station data is stored in the R2 buffer memory at the
following timing.
•
Just after the conditions are established in the monitor transmission
function.
R2
External device, such as ID controller
Master station
1) Monitor conditions
established!
2) Transmission
data
3) Transmission
data
Transmit after R2
detects monitor
condition establishment!