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8 PROGRAMMING
MELSEC-QnA
8.3 Programming Procedure
The procedure for creating a program is described.
8.3.1 Communication between the master station and remote I/O station
The basic procedure for creating a program to communicate with remote I/O station is
shown below.
Refer to Chapter 9 for a program example.
.........Yn0
.........Yn6
.........YnA
.........Yn0
.........Yn8
For debugging only
For operation only
Parameter setting
Refresh instruction
Refresh instruction
2
Parameter registration to E PROM
Data link startup by the E
2
PROM
parameters
Read from remote input (RX)
ON/OFF control of remote output (RY)
Write to remote output (RY)
.........Buffer memory address E0
H
to 15F
H
.........Buffer memory address 160
H
to 1DF
H
.........Buffer memory address 0
H
to 5F
H
Control by the read remote-input
information
Data link startup by the buffer-memory
parameters