Modem is not connected correctly or
the power is not turned on.
Failed to initialize the modem. Check
Printer error or power failure
External power is not supplied to
external I/O unit
External I/O unit installation error.
Check if firmly installed.
BCD/BIN conversion error Correct
0 divisor division error. Confirm
Specified device No. is out of range.
Invalid device value in time action
The file number exceeds the
limitation. File output failed.
Cannot start hard copy. Confirm
Upper and lower limit value error.
Confirm value setting.
Insufficient USB drive capacity.
Confirm the drive capacity.
USB drive is not installed or in a
USB drive is not formatted.
Unable to overwrite. USB drive is
USB drive error. Replace USB drive.
An error response has been received
from the connected device.
Communication timeout. Confirm
communication pathway or modules.
There is no response to the initializing command because the modem is not
connected correctly or the power is not turned on.
• Confirm the modem connection.
• Turn on the power of the modem.
An error is returned from the modem because the initializing command is invalid.
• Confirm the initializing command of the modem.
Printer is faulty or the printer power supply has not been turned on.
• Confirm the printer.
• Turn on the power supply of the printer.
Error occurred at the external I/O interface module.
• If an external power supply (24VDC) is not supplied, supply the external power
• If an external power supply is supplied, replace the external I/O interface
The external I/O interface module is not installed correctly.
Install the external I/O interface module correctly.
Any value that cannot be converted to a BCD/BIN value is being displayed/input.
• Change the device data to be displayed to the BCD value.
• Correct the input value to the 4 digits integer.
Zero division occurred by the data operational expression.
Review the data operational expression so that the divisor should not become 0.
The entered file number is out of range.
Check the entered file number, and enter a valid value (1 to 9999).
When controllers are controlled with the GOT's time action function, the set No. is
our of range, or the set device values regarding the operation settings are out of
range or invalid.
Set valid values.
Delete the file that has the largest file No. and unnecessary files.
Check if the output destination specified with the special function switch in which
the hard copy start is set and the output destination specified by setting of the hard
copy are matched.
The setting of lower/upper limit value is [Upper limit < Lower limit].
Correct the setting so as to be "Upper limit
Available memory of the extention drive is insufficient.
Confirm the available memory of the extention drive, and increase the memory if it
Install the extention drive if it is not installed.
Reinstall the extention drive if it is in the removable status.
Extention drive is not formatted or formatted incompatible with GOT.
Reformat the extention drive.
Extention driver is write-protected.
Cancel the write-protection of extention drive.
Extention drive is faulty.
Replace the extention drive.
• Eliminate the cause of the CPU error.
• Review the operating conditions of the CPU, parameters, and others.
The time-out error occurred during communicating.
• Confirm the cable omission, the communication unit mounting status and status
of the PLC.
Channel No. is not displayed in error code or error message in the case an error
occurs when using the multi-channel function.
Refer to the following manual to identify the channel No. in error.
GOT2000 Series Connection Manual for GT Works3 and a controller used
(1.6 Checking for Normal Monitoring)
• This error may occur when the load of PLC CPU becomes heavier while
accessing other stations. In such case, transfer the data of the other station to
the host station PLC CPU and monitor them at the host.
• Put COM instruction when the PLC scanning is long.
• Check if the version of the communication driver supports the controller.
For how to check the version of the communication driver, refer to the following.
GT Designer3 (GOT2000) Screen Design Manual
8.2 Error Codes and System Alarm List
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