Example of Ladder Programming for Remote I/O Communications

Section 4-6

I/O Data Communications Unit Error Flag

 

Flag (word n+12, bit 15) (word n+10, bit 00)

 

Slave I/O processing

Note Even if there is a communications error with the slave, the slave input data is saved in the allocated area.

To prevent operating errors, make the ladder program so that no slave I/O pro- cessing will occur when the Unit Error Flag (word n+10, bit 00) is ON.

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Omron CS1W-DRM21, CJ1W-DRM21 operation manual Example of Ladder Programming for Remote I/O Communications