System clock
The special relay about system clock is shown below.
R: Read only, R/W: Read/Write
No.
Name
SM400
Always ON
SM401
Always OFF
SM402
After RUN, ON for one scan only
SM403
After RUN, OFF for one scan only
SM409
0.01 second clock
SM410
0.1 second clock
SM411
0.2 second clock
SM412
1 second clock
SM413
2 second clock
SM414
2n second clock
SM415
2n ms clock
SM420
Timing clock output 1
SM421
Timing clock output 2
SM422
Timing clock output 3
SM423
Timing clock output 4
SM424
Timing clock output 5
Description
ON
OFF
ON
OFF
ON
1 scan
OFF
ON
1 scan
OFF
0.005 s
0.005 s
0.05 s
0.05 s
0.1 s
0.1 s
0.5 s
0.5 s
1 s
1 s
n s
n s
n (ms)
n (ms)
n2 scan
n2 scan
n1 scan
n2 scan
n2 scan
n1 scan
n2 scan
n2 scan
n1 scan
n2 scan
n2 scan
n1 scan
n2 scan
n2 scan
n1 scan
R/W
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
APPENDIX
Appendix 1 Special Relay List
A
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