Before Troubleshooting; Troubleshooting Procedure - Mitsubishi Electric MELSEC-Q Series User Manual

This chapter describes errors that may occur on CC-Link IE Field Network, causes of the
errors, and corrective actions.

12.1 Before Troubleshooting

Check that the POWER LED of the power supply module and the MODE LED of the CPU
module are on. If either or both are off, troubleshoot the CPU module. (Refer to the "User's
Manual (Hardware Design, Maintenance and Inspection)" of the CPU module in use.)

12.2 Troubleshooting Procedure

The procedure for identifying the cause of the problem and taking action is explained below.
For identifying the cause of the problem and taking action, use GX Works2. If a slave station
cannot be monitored due to an error such as cable disconnection, directly connect the
supported programming tool to the slave station.
(1) Procedure
1) Connect GX Works2 to the CPU module, and open the "System Monitor" window.
[Diagnostics] [System Monitor]
2) Select the module in which an error has occurred.
• When a module other than a Simple Motion module is selected
Refer to (a).
• When the selected module is the Simple Motion module
Refer to (b).
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Chapter 12 TROUBLESHOOTING