10010.4 Alarm Description and Cause/Action(1) Message level alarmsCode Error name Cause/Action40 Emergency stop Cause: An emergency stop condition was detected.(This is not an error.)41 Motor voltage drop Cause: The “external cutoff relay” controller detected a motor drive-power cutoff condition where the MPI and MPO terminals areopen.(This is not an error.)(Note) If this alarm generates when the MPI and MPO terminals areclosed, an internal failure of the controller is suspected.5A Reception overrun5B Reception framing error5D Header error5E Delimiter error7F BCC errorThis alarm indicates an error during PC or teaching pendant operationor in the serial communication using the PLC’s communication module.Cause: (1) Garbage data due to the effect of noise(2) Duplicate slave numbers when multiple controllers arecontrolled by serial communicationAction: (1) Adjust the wiring in a manner eliminating the effect of noiseand review the installation of equipment, etc.(2) Change the slave numbers to avoid duplication.61 FNCCHR, W addresserror62 Operand 1 error63 Operand 2 error64 Operand 3 errorThis alarm indicates an error in the serial communication using thePLC’s communication module.Cause: Undefined command or out-of-range dataAction: Review the transmitted data and correct the format.65 EEPROM write timeout Cause: Writing of parameter or position data to the nonvolatile memoryarea does not complete within 200 ms.(This alarm will not generate in normal operation.)Action: Do not write data from the PC or teaching pendantsimultaneously while a command is being issued from the PLC.70 Movement commandduring RUN-OFFCause: A movement command was issued while the servo was OFF.Action: Issue a movement command after confirming that the servo isON (SRDY or PEND is ON).73 Error reset during servoONCause: An alarm reset command was sent while the servo was ONduring an operation by serial communication.(PIO commands are excluded.)Action: Send an alarm reset command after confirming that the servois OFF.75 Movement commandduring home returnCause: The next movement command was issued during home return.Action: Issue the next movement command after confirming that thehome return has completed (HEND is ON).76 Soft reset during servoONCause: A soft reset command was sent while the servo was ON duringan operation by serial communication.(PIO commands are excluded.)Action: Send a soft reset command after confirming that the servo isOFF.
