Mitsubishi Electric Melsec QJ71LP21 Reference Manual page 310

7 APPLICATION FUNCTIONS
Sequence scan
Read command
Read completion device
Host CPU
(Device designated in (D2))
Read completion device
(Device at (D2)+1)
Read data storage device
(Device designated in (D1))
Network module
Network module
Sequence scan
Target station CPU
Read data storage device
(Device designated in (S1))
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(b) Instruction execution timing
1) Normal completion
[ZNRD instruction]
ZNRD
0 END 0
ON
OFF
OFF
OFF
Channel 1(fixed)
0 END 0
END 0
END 0 END 0
100
MELSEC-Q
END 0 END 0
OFF
ON
OFF
One scan
100
END 0 END
END
7 - 86