Checking The Programmable Controller - Mitsubishi Electric MELSEC iQ-F Series Quick Connection Manual

6.2

Checking the Programmable Controller

Check with the LED status
Check the programmable controller status with the LED.
Check of error details
Go to the menu bar of GX Works3. Select [Diagnostics]  [CC-Link IEF Basic Diagnostics]. The network status are listed, and
error details of the programmable controller can be checked at "Detailed Diagnostics".
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6.2 Checking the Programmable Controller
Communications without problems: Flashing at high speed
Communications with an error: Lit (flickering at a regular interval)
Ethernet cable of the programmable controller disconnected: Off
Click [Error Details] of
a desired station number
to check the error details.