Troubleshooting
GT10/GT30
163
9.3 Error Codes and How to Handle Them
9.3.3 PLC Error Codes
ErrorcodeswhicharesentfromthePLCarelistedinthetablebelow.Fordetails,please
refer to the separate [Computer Communication Unit Introductory Manual].
Code no. Content Cause and solution
21
Data error
A data error occurred during communication.
1)There is an error in the communication condi-
tion settings. Check the PLC and GT10 com-
munication speed and transfer format.
2)There is a temporary error due to noise, etc.
Re-supply power to the PLC and GT10.
22
Overrun error
The PLC isn’t receiving data.
The CPU unit’s reception buffer is overflowing.
There could be an error in the PLC.
Re-supply power to the PLC and GT10.
40
BCC error
A data error occurred during communication.
1)There is a temporary error due to noise, etc.
Re-supply power to the PLC and GT10.
2)There is an error in the CPU unit. Re-supply
power to the PLC and GT10.
3)The PLC connection cable is too long. Short-
en the cable to max. 10 meters.
41
Format error
The PLC has been sent a command that doesn’t
match the protocol.
1)There is a temporary error due to noise, etc.
Re-supply power to the PLC and GT10.
2)There is an error in the CPU unit. Re-supply
power to the PLC and GT10.
3)The PLC connection cable is too long. Short-
en the cable to max. 10 meters.
42
NOT support error
The GT10 has sent a non-supported command
to the PLC.
1)There is a temporary error due to noise, etc.
Re-supply power to the PLC and GT10.
2)There is an error in the CPU unit. Re-supply
power to the PLC and GT10.
3)The PLC connection cable is too long. Short-
en the cable to max. 10 meters.
53
BUSY error
The PLC is currently processing another com-
mand.
A large amount of data is being communicated
with another RS232C port on the PLC.
Wait until the error is gone.
61
Data run error
There is an error in the register or relay number.
A register or relay number which doesn’t exist in
the PLC was specified during screen creation
using GTWIN.
Correct the output device being used with the
part, or the transfer of clock data to an external
device.
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