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10 TROUBLESHOOTING
10.6 List of Error Codes
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10
10.6
List of Error Codes
The latest error code is stored in Latest error code storage area (RWrn+16).
This section lists error descriptions, causes, and corrective actions.
Error code Error
description Cause and action
0064H
0065H
0066H
0067H Bridge module
hardware error A malfunction has been detected in the bridge module hardware.
• Power off and on the bridge module.
• If the error occurs again, the module may be in failure. Please consult your local Mitsubishi representative.
00C8H Transmission
cable voltage drop
error The voltage of the 24VDC external power supply may be lacking.
• Adjust the power supply voltage of the 24VDC external power supply to be within the rated value (21.6 to 27.6VDC).
The recommended voltage is 26.4VDC.
• Check that the power cables (24V, 0V) are not disconnected or short-circuited.
• When crimping the link connector, check that the pin layout is correct.
• Check that the 24VDC external power supply is properly connected to the terminal block of the bridge module or the
slave module.
• Check that there is no short-circuit or incorrect wiring and screws are tightened sufficiently.
00C9H DP/DN short error A short-circuit may have occurred in the transmission cables (DP, DN) or the maximum supply current may be
exceeded.
• Check that the transmission cables (DP, DN) are not short-circuited.
• When crimping the link connector, check that the pin layout is correct.
• Check that the transmission cables (DP, DN) are not in contact with each other and that there is no incorrect wiring in
the terminal block wiring of the bridge module and the slave module.
• Correct the cables (wire diameter, total length) and modules (type, the number of connected modules) so that the
total current consumption of all the slave modules does not exceed the transmission cable supply current of the
bridge module.
00CAH DP/DN
disconnection
error Disconnection may have occurred in the transmission cables (DP, DN) or there may be no response from the slave
module.
The slave module may be malfunctioning or the system configuration may have been changed after the automatic
address detection function is executed.
Check Number of the error IDs (RWrn+19) and Latest error ID storage area (RWrn+17), locate the disconnection, and
perform the following actions.
• Check that the transmission cables (DP, DN) (entire cables) are free from disconnection.
• Check that the cables have been crimped with proper pin layout using link connectors appropriate to the wire
diameter.
• Check that the transmission cables (DP, DN) are properly connected to the terminal block of the bridge module.
• Check that there is no incorrect wiring and screws are tightened sufficiently.
• When creating a new system, adding or removing a slave module, or changing the address of the slave module,
perform the automatic address detection. After performing the automatic address detection, check that the number of
slave modules and the address are consistent with those of the actual system.
• If the LINK LED of the slave module is not flashing, check whether there is a disconnection, short circuit, incorrect
wiring, or poor contact in the transmission cables (DP, DN) around the module.
012CH
012DH Slave module
hardware error A malfunction has been detected in the slave module hardware.
Perform either of the following operations:
• Power off and on the bridge module.
• Power off and on the slave module.
Check that the modules are not affected by noise.
012EH Parameter access
target module ID
error Parameter access has been executed on the ID that has not been detected by the bridge module through the automatic
address detection function.
Check the alarm ID information in the specified device of the CPU module to locate the error ID and perform the
following actions.
• Check that the ID of the slave module that has been targeted for parameter access is consistent between the actual
system and program. Make sure that the ID of the input slave module and I/O combined slave module is set to the
a 200H.
• When creating a new system, adding or removing a slave module, or changing the address of the slave module,
perform the automatic address detection.
• After performing the automatic address detection, check that the number of slave modules and the address are
consistent with those of the actual system.
012FH Parameter value
error A write signal of a parameter that cannot be set has been detected in the slave module.
Check the alarm ID information in the specified device of the CPU module to locate the error ID and perform the
following action.
• Check that the value that is set to the parameter of the slave module is within the settable range.