Mitsubishi Electric MELSEC Q Series Reference Manual page 351

• When failed
Sequence scan
Start contact
Completion device
Own station CPU
(Device specified in (D2))
Completion status indication device
(Device of (D2)+1)
Completion status
(Device of (S1)+1)
CC-Link IE Controller
Network module
(4) Error
When a link dedicated instruction failed, the error details can be confirmed by either of the following methods.
(a) With the programming tool
The error details can be checked in the CC IE Control diagnostics. (
(b) Checking devices
Completion status indication device ((D2)+1) is turned ON, and an error code is stored in Completion status
((S1)+1) of control data.
Check the error and take corrective actions according to the error code. (
(5) Program example
The program example of the SREAD instruction is different from that of the READ instruction in that the read
notification device (D3) is specified at the end of arguments.
Refer to the following for details on the READ instruction program example.
Page 341, Section 9.3 (5)
As in the program example of the READ instruction, when M101 turns ON, data in D250 to D254 of station No.4
(target station) are read out to D700 to D704 of station No.1 (own station).
Additionally, if the read notification device (D3) is turned ON on the target station, Y60 of the target station is
turned ON.
SREAD
0 END 0
Channel 1
Target station error
CHAPTER 9 DEDICATED INSTRUCTIONS
END 0 END 0 END
1 scan
Error code
Page 526, Section 10.3)
Page 511, Section 10.2)
9
0 END
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