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(d) REQ instruction execution timing
When the start contact starts up from OFF to ON, the processing is performed one time.
• When completed
Sequence scan
Start contact
Own station CPU
Completion device
(Device specified in (D2))
Completion status
indication device
(Device of (D2)+1)
Master/local module
Network module
Sequence scan
Target station CPU
REQ
0
END
0
OFF
Channel 1
0
END
0
END
0
Clock data read/write
CHAPTER 10 DEDICATED INSTRUCTIONS
END
0
END
0
END
1 scan
END
0
END
0
END
10
0
END
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Troubleshooting
