Mitsubishi Electric MELSEC-Q Series - Page 349

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CHAPTER 9 DEDICATED INSTRUCTIONS
9
9.4 JP/GP.SREAD (Data Read from Programmable Controllers on Other Stations)
(b) Target stations available for specification
• Target network
• In addition to CC-Link IE Controller Network, stations in the following networks can be also specified.
• CC-Link IE Field Network
• MELSECNET/H
• MELSECNET/10
• Ethernet
• Target station's CPU type
The SREAD instruction is executable only when the target station is QCPU, RCPU, LCPU, or QnACPU.
The SREAD instruction is not executable to the ACPU connected to MELSECNET/10 or Ethernet.
(c) Checking the execution status of the SREAD instruction
The execution status of the SREAD instruction (Normal completion, Error completion) can be checked with the
following devices specified in the setting data.
• Completion device (D2)
Turns ON in the END processing for the scan after completion of the SREAD instruction, and turns OFF in
the next END processing.
• Completion status indication device ((D2)+1)
Turns ON in the END processing for the scan after completion of the SREAD instruction, and turns OFF in
the next END processing, only when the SREAD instruction has failed.
(d) Operation in SREAD instruction execution
• Operation of the own station
• Operation of the target station
Program of own station
Completion device of
own station (D2)
Completion status indication
device ((D2)+1)
SREAD instruction
SREAD instruction execution
Reading from the device specified
by SREAD completed
Start contact
OFF
ON
ON
ON
END processing END processing END processing
END processing
OFF
OFF
When failed
Normal completion
1 scan
Read notification device (D3)
Program of target station
Reading of the device specified
by SREAD completed
OFF
ON
END processingEND processingEND processing END processing
1 scan