State At Error Occurrence; Cc-Link Communication Error - Mitsubishi Electric MELSERVO-J3 Series Instruction Manual

17. SPEED CONTROL OPERATION

17.9.2 State at error occurrence

If an error occurs during operation, it will be the state shown below.
Error location
Servo side
alarm occurrence
CC-Link
communication error
Programmable
controller error
STOP
Servo side
warning occurrence

17.9.3 CC-Link communication error

The table below shows the detailed description of the communication alarm display area. The servo amplifier
has four LED indications.
L.RUN: Lit at normal reception of refresh data. Turned off when data is not received for a given period of time.
SD : Lit when send data is "0".
RD : Lit when the carrier of reception data is detected.
L.ERR: Lit when the data addressed to the host is in CRC or abort error.
(Note) Communication alarm display LED
L.RUN SD
Note. :Lit :Extinguished
Description
Servo operation
CC-Link data communication
Servo operation
CC-Link data communication
Servo operation
CC-Link data communication
Servo operation
CC-Link data communication
RD L.ERR
Normal communication is made, but a CRC error sometimes occurs due to noise.
Normal communication
Hardware fault
Hardware fault
Receive data results in CRC error, disabling a response.
Data does not reach the host.
Hardware fault
Hardware fault
Hardware fault
Polling response is made, but refresh receive is in CRC error.
Hardware fault, or manufacturer setting switch (SW2) changed
Hardware fault
Hardware fault
Data addressed to the host resulted in CRC error.
Data does not reach the host, or the data addressed to the host cannot be
received due to noise.
Hardware fault
Baud rate setting illegal
Station number setting illegal
Baud rate or station number setting changed midway (ERROR flickers for about
0.4s.)
Data cannot be received due to power-off, power supply failure, open cable, etc.
WDT error occurrence (hardware error)
:Flicker
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Operation mode
Test operation CC-Link operation
Stop
Continue Continue
Stop
Stop
Continue
Stop
Stop Continue
Continue Continue
Fault
Stop
Stop
Stop
Stop
Stop