YASKAWA MECHATROLINK Sigma 2 Series User Manual page 185

9 Troubleshooting
A.96
A.96: MECHATROLINK-II Communications Warning
Display and Outputs
Alarm Outputs
Alarm Code Outputs
ALO1 ALO2
ON OFF
Note: OFF: Output transistor is OFF (alarm state). ON: Output transistor is
ON.
Status and Remedy for Alarm
During
MECHATROLINK-II
communications
Cause
A Contact between the cable and the connector is
faulty.
B Malfunction due to noise.
A.b6
A.b6: Communications LSI Error Alarm
Display and Outputs
Alarm Outputs
Alarm Code Outputs
ALO1 ALO2
OFF OFF
Note: OFF: Output transistor is OFF (alarm state).
Status and Remedy for Alarm
At power ON
Cause
A NS115 is defective.
ALM Output
ALO3
OFF ON
A, B
Correct the connector wiring.
Take noise prevention measures.
ALM Output
ALO3
OFF OFF
A
Replace the NS115.
9-10
Remedy
Remedy