Troubleshooting12-412.2 Troubleshooting12.2.1 ERR LED Turns ON on the Unit SituationAn alarm or error occurred. SolutionCheck the condition according to the following procedure.PROCEDURE1. Display "Device Monitor" under "Online" in FPWIN GR7.2. Monitor the unit memory (UM00064 or M00066) in which an error code isstored, and check the alarm/error code.3. In the case of code 44, monitor the unit memory (UM00207) in which apositioning error code is stored and check the detailed information. For thedetailed information on positioning errors, refer to the list of positioningerror codes on page 12-6.4. Check the appropriate way to handle for each error code, switch the modeto PROG. mode and review the settings or program. (When code 20 or 26occurs, the unit must be rebooted.)5. Execute UCLR instruction to clear the error. In the case of alarm (code: U20)or error (code: 26), turn on the power supply again.6. Switch the mode to the RUN mode. Once the ERR.LED turns off, the errorstate will be cleared. If the LED does not turn off, repeat the above operation. Alarm codeCode Name SituationCodestoragedestinationSolutionU20 Unit alarm (Htype only)There is apossibility that anerror occurred inthe main unit.UM00064Reboot the unit. If the alarm still occurs,consult your Panasonic representative.
