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MELSEC-GOT
8 ERROR CODES AND ERROR MESSAGES
8
8.2 Error Code and Error Message List
(1) Error messages displayed before execution of monitoring
Error Message
Definition
Action
Check communication line.
(Cable, driver, module)
The cable, installed communication driver or
communication board/communication module is
faulty.
1. Check for any disconnected cable or
improperly fitted communication
board/communication module.
2. Check the installed communication driver.
Check memory data.
Unauthorized combination of OS program
versions installed.
Confirm the versions of the OS programs
installed.
(2) Error codes and messages displayed during execution of monitoring
The error codes and messages detected by the GOT are indicated below.
Error
Code
Error Message
Definition
Action
303
Too many monitor points
specified
304
Too many trigger points
specified
The number of objects set to the screen to be
displayed is too many to reserve the work area
of the system
305
Too many print-out points
specified
The number of objects set to the screen for
print-out by the hard copy function is too many
to reserve the work area of the system
Reduce the number of objects
306
No monitor data
Screen data has not been downloaded to the
built-in memory
Download the screen data to the built-in
memory
307
No monitor device setting
Object monitoring devices not determined
Determine object monitoring devices
308
Specified comment not found
or outside range
The comment number set for comment display
does not exist or the comment file does not exist
Create the comment file and download it to the
GOT
309
Device read error
Device data read caused an error
Correct device
310
Specified monitor data not
found or outside range
(1) The specified base screen/window screen
does not exist in the project data.
(2) The specified base screen/window screen is
outside the permissible range.
(1) Specify the existing base screen/window
screen.
(2) Specify the existing base screen/window
screen.
311
More than 1024 alarms in
alarm history
The alarms in the history has exceeded the
largest number of points (1024 points) which the
alarm history display function can monitor
Reduce the alarms in the alarm history
(Remove the history recovered)
312
The collected time has
exceeded upper limit
The collected time exceeded the upper limit
when the following setting had been made for
the scattered chart.
"Store memory"
"Accumulate/Average"
1. Establish "Clear trigger" set for the scattered
chart.
2. Set "Operation at frequency over time" of the
scattered chart for "Initialize and continue".
315
Device write error
Data write to device caused an error
Correct device
316
Operation result value cannot
be displayed/entered
The data operation result has exceeded the
range which can be represented by the device
type
Reconsider the data operation formula so that
the operation result does exceeded the range
which can be represented by the device type
320
Specified part not found or
outside range
The part number set for part display does not
exist.
Confirm the part number specified for the part
display in the screen data