Chapter 13 Troubleshooting; Checking Errors By Leds; Error Display Check - Mitsubishi Electric FX5 User Manual

13
TROUBLESHOOTING
This section contains an explanation of errors that may occur during communication between built-in Ethernet and other
devices, and troubleshooting for such errors.
The methods for checking the built-in Ethernet for errors and the contents of errors are as follows.
In either case, after checking for errors and the contents of the errors, take proper measures to eliminate the error.
Check by display LEDs on the front of the CPU module
You can check whether or not errors currently exist on the CPU module (built-in Ethernet) by the status of the display LEDs.
Check using GX Works3
You can check error code corresponding to errors currently occurring, status of the built-in Ethernet side, and conduct tests
using GX Works3.
■Ethernet diagnostics (Page 144 Ethernet diagnostics)
• Checking error contents by error code (Page 150 Error codes of the Ethernet communication)
If a line error, etc., occurs when connecting with devices of multiple manufacturers, determine the location of
the error by using a line analyzer, etc.
13.1

Checking Errors by LEDs

This section contains an explanation of errors that can be checked by LEDs on the front of the CPU module.

Error display check

The following can be checked by LEDs on the front of the CPU module.
<CPU module LED>
LED name Check condition
PWR Does not turn on when power
of CPU module is turned on
ERR Turns on when power of CPU
module is turned on
Flashes when power of CPU
module is turned on
Or flashes temporarily
SD/RD Does not turn on when data
is sent/received
Cause/action
Power source may not be correctly connected to the CPU module. Check the connection status.
If there is nothing wrong with connection, the hardware may be faulty. For repair, contact your local
Mitsubishi Electric representative.
In case of built-in Ethernet parameter setting error:
• Check/correct built-in Ethernet parameter setting values using GX Works3.
In case of CPU module error (hardware error):
• For repair, contact your local Mitsubishi Electric representative.
Check the contents of the error by error code stored when error is detected by the following processing,
and eliminate the cause of the error.
• Initial process
• Open process
• SLMP communication process
• Other processing (processing wherein error code is stored)
For error codes, refer to Page 150 Error codes of the Ethernet communication.
If [ERR] is lit:
• Eliminate the cause of [ERR] being lit.
If cable connection is faulty:
• Check cable connection.
• Perform initial processing completion check and check if there is anything wrong with the Ethernet
line.
In case of own station IP address setting error:
• If there is nothing wrong with cable connection, check the setting values of own station IP address,
router setting and subnet mask setting by GX Works3.
If there is something wrong with transmission program of other device:
• Check the transmission program of other device.
13 TROUBLESHOOTING
13.1 Checking Errors by LEDs
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