Mitsubishi Electronics AJ61BT11 Home Theater Server User Manual


 
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1 OVERVIEW
MELSEC-QnA
1.3 Communication Overview
1.3.1 Communication between the master station and remote I/O station
The overview of the communication between the master station and remote I/O station
is described below.
Refer to Section 4.2 for details.
SET Yn0
SET Yn6
1
2
FROM
4
TO
5
Refresh instruction
Data link startup
Remote input
(RX)
Remote output
(RY)
Buffer memory
Link scan
Programmable controller CPU
Master station
Remote I/O station
Input
Output
Link scan
3
6
1
Turn on the refresh instruction.
2
Startup the data link.
3
By the link scan, the remote I/O station's input information is stored in the master
station's remote input (RX).
4
By the FROM instruction, read from the remote input (RX).
5
By the TO instruction, write the on/off data to the remote output (RY).
6
By the link scan, the remote I/O station's output is turned on/off.