Mitsubishi Melsec-Q Series User Manual page 461

Error code
Error item
(Hexadecimal)
4A00
H
Link-related
error
4A01
H
4A02
H
4A03
H
4B00
H
4B01
H
Target-related
error
4B02
H
4B03
H
4B04
H
4C00
H
Multiple CPU-
4C08
H
related error
4C09
H
Table12.2 Error code
Error details
• Access to the specified station cannot be
made since the routing parameters are not
set to the start source CPU module and/or
relay CPU module.
• For routing via a multiple CPU system, the
control CPU of the network module for data
routing has not started.
• When System A/System B is not yet identi-
fied in a redundant system configuration,
communication was made with the other
station via the network module.
The network of the No. set to the routing parame-
ters does not exist.
Access to the specified station cannot be made.
A request for network test was issued.
An error occurred in the access destination or
relay station, or the specified transfer setup
(request destination module I/O number) is illegal.
The target is not the No. 1 CPU of the multiple
CPU system.
The request is not addressed to the CPU module.
• The specified route is not supported by the
specified CPU module version.
• The communication target CsPU is not
mounted.
The specified transfer setup (request destination
module I/O number) is not supported.
The specified device is unavailable for the motion
CPU or outside the device range.
There are a total of 33 or more DDWR and DDRD
requests.
The specification of the requested CPU module
No. is illegal.
CHAPTER12 TROUBLESHOOTING
Corrective action
• Set to the related stations the routing parameters for
access to the specified station.
• Retry after a while, or start communication after con-
firming that the system for data routing has started.
• In a redundant system configuration, connect the
tracking cable, start System A/System B normally, and
then restart communication.
Check and correct the routing parameters set to the related
stations.
• Check the network module/link module for an error or
offline status.
• Check to see if the network number/PC number setting
has no mistake.
Check the request data of the MC protocol, etc.
• Take corrective action after checking the error that
occurred at the specified access destination or the
relay station to the accessed station.
• Check the transfer setup (request destination module
I/O number or programmable controller number) in the
request data of the MC protocol, etc.
Execute the request for the No. 1 CPU of the multiple CPU
system.
Perform operation for the module that can execute the speci-
fied function.
Check whether the specified route is supported or not.
In the target setup, an illegal value is set as the head I/O
number of the target module.
Check the request data contents.
Execute again after reducing the number of DDWR and
DDRD requests to be executed simultaneously.
Check the request data contents.
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