IAI America ERC - Manual (Page 131)

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9.3 Alarm Description and Cause/Action
(1) Message level alarms
Code Error name Cause/Action
41 Motor voltage drop This alarm indicates that the motor drive power is cut off. (This is not an error.)
5A Reception overrun
5B Reception framing error
5D Header error
5E Delimiter error
7F BCC error
This alarm indicates an error during PC or teaching pendant operation or 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 are controlled by serial
communication
[3] When a SIO converter is used, a teaching pendant and a PC are
connected at the same time.
Action: [1] Adjust the wiring in a manner eliminating the effect of noise and review the
installation of equipment, etc.
[2] Change the slave numbers to avoid duplication.
[3] Connect either of them.
61 FNCCHR, W address
error
62 Operand 1 error
63 Operand 2 error
64 Operand 3 error
This alarm indicates an error in the serial communication using the PLC’s communication
module.
Cause: Undefined command or out-of-range data
Action: Review the transmitted data and correct the format.
65 EEPROM write timeout Cause: Writing of parameter or position data to the nonvolatile memory area does not
complete within 200 ms.
(This alarm will not generate in normal operation.)
Action: Do not write data from the PC or teaching pendant simultaneously while a
command is being issued from the PLC.
70 Movement command
during RUN-OFF
Cause: A movement command was issued while the motor drive power was cut off.
Action: Issue a movement command after deactivating the safety circuit to supply the
motor drive power.
73 Error reset during servo
ON
Cause: An alarm reset command was sent while the servo was ON during an operation
by serial communication.
(PIO commands are excluded.)
Action: Send an alarm reset command after confirming that the servo is OFF.
75 Movement command
during home return
Cause: The next movement command was issued during home return.
Action: Issue the next movement command after confirming that the home return has
completed (HEND is ON).
76 Soft reset during servo
ON
Cause: A soft reset command was sent while the servo was ON during an operation by
serial communication.
(PIO commands are excluded.)
Action: Send a soft reset command after confirming that the servo is OFF.