Mitsubishi Electric MELSEC QS Series User Manual page 162

9
TROUBLESHOOTING
Error code
Detectability Error details
(hexadecimal)
Mode setting error
BBC1
(parameter)
Station number setting
BBC2
error (parameter)
Master station
BBC5
overlapping error
BBD3 CPU module type error
BC00 System error
BD86 CPU error is detected
BF00 System error
9
- 32 9.5 Error Codes
Table 9.1 Error Code List (6/6)
Cause of error occurrence (details)
The network parameter is corrupted.
Multiple master stations exist on the same
line.
Or, line noise was detected at power-on.
The installed CPU module is not a safety CPU
module.
A system error was detected.
A hardware error is detected on any of the
safety CPU module, safety master module and
safety base.
A system error was detected.
Corrective action
Perform the following procedures:
(1) Correct the network parameter and write it
to the PLC.
(2) If the error still occurs after the correction,
there is a hardware error on the safety
master module. Please consult your local
Mitsubishi Electric representative.
Reduce the number of master stations on the
same line to one.
Or, check the line status.
Check the CPU module installed.
Perform the following procedures:
(1) Check if the safety master module, safety
power supply module, and safety CPU
module are properly mounted on the safety
base unit.
(2) Check if the operation environment of the
safety master module is within the general
specifications for the safety CPU module.
(3) Check if the power capacity is sufficient.
(4) Check if the hardware of the safety master
module, safety CPU module and safety
base unit is normal, according to each
manual. In the case of failure, please
consult your local Mitsubishi Electric
representative for repair.
(5) If the problem is not resolved by the
actions above, please consult your local
Mitsubishi Electric representative.