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CHAPTER9 DEVICES
9
9.2 Internal User Devices
9.2.9 Step relay (S)
9.2.9 Step relay (S)
This device is provided for SFC programs.
Because the step relay is a device exclusively used for SFC programs, it cannot be used as an internal relay in the sequence
program.
If used, an SFC error will occur, and the system may go down.
For use of the step relay, refer to the following.
MELSEC-Q/L/QnA Programming Manual (SFC)