5.3.3 When Connected to a FP Series PLC Error codes which are sent from the PLC are listed in the table below. For details, refer to the table of
MEWTOCOL-COM communication errors in PLC user’s manuals.
For GT01, GT11 and GT21
Code No.
Content
Cause and solution
ER21
Data error
A data error
occurred during
communication.
1) There is an error in the communication condition settings. Check
the PLC and GT baud rate and transfer format.
2) There is a temporary error due to noise, etc. Re-supply power to
the PLC and GT.
ER22
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 GT.
ER40
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 GT.
2) There is an error in the CPU unit. Re-supply power to the PLC
and GT.
ER41
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 GT.
2) There is an error in the CPU unit. Re-supply power to the PLC
and GT.
ER42
NOT support error
The GT 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 GT.
2) There is an error in the CPU unit. Re-supply power to the PLC
and GT.
ER53
BUSY error
The PLC is
currently
processing another
command.
A large amount of data is being communicated with another
RS232C port on the PLC.
Wait until the error is gone.
ER60 Parameter errror The specified parameter does not exist, or it cannot be used.
ER61
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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