Mitsubishi Electric QJ71E71-100 User Manual page 277

(5) Program example
The following shows a sample program that reads the open error code of the connection number 1 (when the I/O
signals of the E71 are X/Y00 to X/Y1F).
CHAPTER 15 DEDICATED INSTRUCTIONS
Specify the open error code of
the connection No.1.
Specify the latest error information.
Execute the ERRRD instruction.
Process upon completion
(Error information is read.)
Process upon abnormal end
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