Communication Between The Master Station And Remote Device Station - Mitsubishi A1SJ61BT11 User Manual

1 OVERVIEW

1.3.2 Communication between the master station and remote device station

PC CPU
SET Yn0
SET Yn6
FROM
TO
TO
FROM
The overview of the communication between the master station and remote device
station is described below.
Refer to Section 4.3 for details.
1
2
4
5
7
10
Turn on the refresh specification
1
Startup the data link.
2
By the link scan, the remote device station's remote input (RX) is stored in the
3
master station's remote input (RX).
By the FROM instruction, read data from the remote input (RX).
4
By the TO instruction, write data to the remote output (RY).
5
By the link scan, the remote device station's remote output (RY) is turned on/off.
6
By the TO instruction, write data to the remote register (RWw).
7
By the link scan, the data is sent to the remote device station's remote register
8
(RWw).
By the link scan, the remote device station's remote register (RWr) is sent to the
9
master station's remote register (RWr).
By the TO instruction, read data from the remote register (RWr).
10
Master station
Refresh specification
Data-link startup
Buffer memory
Remote input
(RX)
Remote output
(RY)
Remote register
(RWw)
Remote register
(RWr)
1 - 10
MELSEC-A
Remote device station
3
Remote input
Link scan
(RX)
6
Remote output
Link scan
(RY)
8
Remote register
Link scan
(RWw)
9
Remote register
Link scan
(RWr)