Mitsubishi Electric QJ71MB91 User Manual page 341

Modbus interface module
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11
TROUBLESHOOTING
Error code
Error Name
737C
Simultaneous
H
(29564)
execution error
CPU response
7380
H
monitoring timer
(29568)
timeout
7381
H
Function code error
(29569)
7382
H
Sub-code error
(29570)
Table11.16 Error code list (Continued)
Error definition
Two kinds of dedicated instructions
were executed simultaneously on the
same channel.
The CPU response monitoring timer
timed out in the slave function.
A request message with a function
code that is not supported by the
QJ71MB91 slave function was
received.
The request message with a sub-code
that is not supported by the QJ71MB91
slave function was received.
Corrective Action
Execute the next instruction after
completion of the currently executing
instruction.
• If an error has occurred in the
programmable controller CPU,
remove the error.
• Set a larger value for the CPU
response monitoring timer.
Confirm the function codes supported
by the QJ71MB91 slave function, and
review the request message to be sent.
Confirm the sub-codes supported by
the QJ71MB91 slave function, and
review the request message to be sent.
11.4 Error Codes
11.4.3 Error code list
Occurrence
1)
2)
3)
4)
5)
(Continued on next page)
11
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9
10
11

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