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GT10/GT30

9.3 Error Codes and How to Handle Them

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Error codes which are sent from the PLC are listed in the table below. For details, please

refer to the separate [Computer Communication Unit Introductory Manual].

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.

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.

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) See note.

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) See note.

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) See note.

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.

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.