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Graphic FX-50DU-TK(S)-C Units
5.
Diagnostics
This chapter is intended to aid a trained engineer in fault finding and trouble shooting.
5.1
Error Messages
Screen messages and there meanings (in alphabetical order).
An incorrectly defined object (of type XXXXXXX) has been found when viewing a screen
using test mode.
•
Correct the error using the FX-PCS-DU/AT-C screen creation software.
CAN NOT USE THE FUNCTION WHILE PROTECTED
Attempt to change data when the PLC has an Entry Code registered.
•
Unlock or delete the entry code using the Entry Code function of Other Mode.
Setting values of timers and counters or file registers can not be changed if the memory
of the PLC is either EPROM or the write protect switch of EEPROM memory is set to ON.
•
Change the memory of the PLC to RAM or turn the protect switch to OFF.
The programmable controller power has gone OFF.
•
Switch the programmable controller power ON.
Defective cable connection or defective cable.
•
Check the cable connection; connect properly. Or replace the cable.
A CPU Error has occurred at the MPU.
•
Remedy the cause of the CPU Error and restart the system.
Screen data, sampled data, alarm history or data bank data cannot be found.
•
Check for references to undefined data and either create the data or remove the
reference.
DISPLAYING SCREEN IS NOT FOUND
User Mode start; Screen 0 has not been defined.
•
Screen 0 is required by the system as the initial screen. Create screen 0.
The screen requested by a Screen Change object does not exist.
•
Check the change screen object or MPU program for an invalid screen number and
either correct the number or create the screen.
The entry code can not be changed while MPU is in RUN.
•
Switch the MPU to STOP.
BAD OBJECT EXISTS - - - XXXXXXX
CAN NOT WRITE TO PLC MEMORY
COMMUNICATION ERROR OCCURS
DATA IS NOT FOUND
PLC IS RUNNING
Diagnostics
5
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