430
(d) Operation in ZNRD instruction execution
• Operation of the own station
(e) ZNRD instruction execution timing
With J.ZNRD, processing is executed one after another while the start contact is ON.
With JP.ZNRD, processing is performed one time only when the start contact turns ON from OFF.
• When completed normally
Program of own station
Completion device of
own station (D2)
Completion status
indication device ((D2)+1)
ZNRD instruction
ZNRD instruction execution Reading from device specified in
ZNRD instruction completed
Start contact
OFF
ON
ON
ON
END
processing
END
processing
END
processing
END
processing
OFF
OFF
When failed
Normal completion
1 scan
1 scan
100
100
ZNRD
Sequence scan
Start contact
Own station CPU
Target station CPU
CC-Link IE Controller
Network module
Network module
OFF
Completion device
(Device specified in (D2))
Completion status indication
device (Device of (D2)+1)
Read data storage device
(Device specified in (D1))
Sequence scan
Read data storage device
(Device specified in (S1))
END0 END0
Channel 1 (Fixed)
END0 END0 END0
END0 END0 END0 END0 END0
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