Mitsubishi MELSEC Q Series User Manual page 21

1 OVERVIEW
PLC CPU
X
Y
W
W
1 - 3
(2) Remote device station communication
Signals for handshaking with the remote device station (initial request, error
occurred flag, etc.) are communicated using the remote input RX and remote
output RY. The setting data to the remote device station are communicated using
remote registers RWw and RWr (see Section 4.2.2).
Master station
Remote
Automatic refresh
input
(RX)
Remote
Automatic refresh
output
Remote
Automatic refresh
register
(RWw)
Remote
Automatic refresh
register
(RWr)
Link scan
Link scan
(RY)
Link scan
Link scan
Remote device station
Remote
input
(RX)
Remote
output
(RY)
Remote
register
(RWw)
Remote
register
(RWr)
Voltmeter
MELSEC-Q
1 - 3