129
The following error messages may appear when inputting a program. Correct
the error as indicated and continue with the input operation.
Error Message Error Type Possible Cause/Correction
PRGM OVER Program too
large
Program size exceeds the capacity. (The last
address is not a NOP instruction, so the
program cannot be written.)
Clear any data after the END instruction or
shorten the program.
ADR OVER Address too
large
Program exceeds program memory’s last
address.
Set the address again.
I/O No. ERR Operand error An illegal value has been entered for an
operand. Reconfirm the allowable operand
area for each instruction, and correct the
data.
The following error messages appear for errors that occur after program ex-
ecution has been started. PC operation and program execution will halt when
any of the following errors occur. The status of the indicators is given for
each error.
Error Type Error Message LED Indicator Possible Cause/Correction
POWER RUN ERROR
Power failure - Check the power supply, voltage, and wiring.
CPU error - The watchdog timer (100 ms) has timed out.
Turn power OFF, change to PROGRAM mode,
and turn power ON again.
Memory error MEMORY ERR The program may contain an error. Correct the
program, then transfer the corrected program to
the PC from the Programming Console.
Alternatively, turn the PC power OFF and ON. If
the memory error occurs when power is switched
ON, an error may have occurred when the
program was transferred from EEPROM to RAM.
No END
instruction
NO END INST The END instruction cannot be found in the
program.
Change to PROGRAM mode, and add an END
instruction to the end of the program.
Lit Not lit
Note When a communication error occurs during a PC Link operation, the LINK
LED will go OFF.
A number of other error messages are detailed within this manual. Errors in
program input can be found in 3-5 Inputting the Program and errors in pro-
gram transfer are detailed in 3-5-8 Program Transfers.
5-4 Error Flags
A number of flags are available in the dedicated bit area that can be used for
troubleshooting. Details are provided in 3-2-5 Dedicated Bits.
Error Messages
Operating Errors
Other Error Messages
Error Flags Section 5-4
To Next Page
Loading...
Need help?
General
