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CHAPTER9 DEVICES
9
2
3
4
5
6
7
8
9.
 I
n
te
rnal Us
er Dev
ice
9.
2.
 St
ep relay 
(S
)
9
 
-
 
19
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.
Remark
For use of the step relay, refer to the following.
QCPU (Q Mode)/QnACPU Programming Manual (SFC)