Mitsubishi Electric MELSEC-L SSCNETIII/H, User Manual

Page: 91 / 154

89
CHAPTER 11 TROUBLESHOOTING
11
11.
4
Check
ing t
he LE
Ds
11.4
Checking the LEDs
The following describes how to troubleshoot the system by the LEDs.
(1) When the RUN LED turned off
If the above action does not solve the problem, perform the unit test on the head module to check for a hardware
error. (

Page 44, Section 6.4)
(2) When the RUN LED is flashing
(3) When the ERR. LED turned on
Identify the cause of the error in GX Works2 and take action. (  Page 83, Section 11.2)
(4) When the ERR. LED is flashing
Check item Action
Is the head module installed correctly? Connect the head module to the power supply module again.
Check item Action
Is the switch of the head module set to RUN? Set the switch of the head module to RUN to start data link.
Is it in the remote STOP status? Cancel the remote STOP and start data link.
Has an error occurred in the head module?
From "System Monitor" in GX Works2, identify the cause of the error and take
action. (

Page 83, Section 11.2)
Is the Motion controller in the RUN status?
Set the Motion controller to the RUN status. If the Motion controller has stopped
due to an error, troubleshoot it referring to the manual for the Motion controller. (

User's manual for the Motion controller used)
Was the head module disconnected during STOP of the Motion
controller?
• Set the Motion controller to the RUN status and reconnect the head module to
the network.
• Reset the head module because it retains the STOP status of the Motion
controller.
Check item Action
Is the station number set within the range of 1 to 64? Set the station number within the range of 1 to 64.