11 - 31 11 - 31
MELSEC-Q
11 TROUBLESHOOTING
POINT
•
If an error occurs during A compatible 1C frame communications, the Q series C24
adds a 2-character error code (00
H
to 10
H
, 42
H
) to the "NAK" code and returns the
"NAK" code to the external device and stores the error code (equivalent to QnA
compatible 2C/3C/4C frame error code) to buffer memory address 25A
H
(CH1) or
26A
H
(CH2).
The exact error contents can be checked by reading the value stored to the
buffer memory.
See Section 11.2.1 for a detailed description of the error codes.
Содержание MELSEC QJ71C24
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