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4 FUNCTIONS
MELSEC-QnA
4.3 Communication Between the Master Station and Remote Device Station
The overview of the communication between the master station and remote device
station is described.
SET Yn0
SET Yn8
FROM
TO
TO
FROM
Programmable controller CPU Master station
Refresh instruction
Data link startup
by EEPROM
parameters
Remote input
(RX)
Remote input
(RX)
Remote output
(RY)
Buffer memory
Remote output
(RY)
Remote device station
Link scan
Link scan
Remote register
(RWr)
Remote register
(RWr)
Link scan
Remote register
(RWw)
Remote register
(RWw)
Link scan
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