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MELSEC-Q
8 PROGRAMMING FOR EXECUTING THE SLAVE FUNCTION
8.3.2 Program example not using the utility package
(1) Device list
Device Description
Reference
section
M31
I/O Communication Start Command
—
M250
*1
Data consistency dedicated instruction setting status
for slave function
3.6.16
D150
*1
Data consistency dedicated instruction setting for
slave function
X21
I/O Communicating
3.3.3 (2)
X200 to X23F
Slave Function Receive Data
3.4.10
Y31
I/O Communication Request
3.3.3 (2)
Y200 to Y23F
Slave Function Transmit Data
3.4.10
*1: Use these devices when executing Data consistency dedicated instruction (DNTSRD,
DNTSWR).
(2) Program
example
(a) When Data consistency dedicated instruction (DNTSRD, DNTSWR) is
used
Enables Data consistency-
dedicated instruction
setting for slave function.
Reads Data consistency-
dedicated instruction
setting status for slave function.
Setting parameters for slave function (See Section 8.2.)
Input data processing program
Output data processing program
I/O communication function
Ensures data consistency and reads the receive data.
Ensures data consistency and writes the send data.
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