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8 PROGRAMMING
MELSEC-QnA
8.3.4 Communication in a compound system
The basic procedure for creating a program to remote I/O, remote device and local
stations is shown below.
Refer to Chapter 12 for a program example.
(1) Master station
.........Yn6
.........Yn0
.........Yn0
.........Yn8
.........YnA
For debugging only
For operation only
Parameter setting
Refresh instruction
Parameter registration to E
2
PROM
Refresh instruction
Data link startup by the E
2
PROM
parameters
Read from remote input (RX)
Read from remote register (RWr)
Control by the read remote input (RX)
ON/OFF control of remote output (RY)
Write to remote register (RWw)
Write to remote output (RY)
.........Buffer memory address 0
H
to 5F
H
.........Buffer memory address E0H to 15FH
.........Buffer memory address 2E0
H
to 3DF
H
.........Buffer memory address 1E0H to 2DFH
.........Buffer memory address 160H to 1DFH
Data link startup by the buffer-memory
parameters
Create data to write to remote register
(RWw)
Control by read data from remote register
(RWr)