Troubleshooting - Mitsubishi Electric SW0DNC-MNETH-B User Manual

14 TROUBLESHOOTING

14 TROUBLESHOOTING
This section explains the identification of the causes and troubleshooting when an
error occurred.
(1) Basic checking procedure
(2) When error cannot be solved
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Check if there is a corresponding error symptom written in "Cause Determination
Methods by Type of Trouble".
(Refer to Section 14.1)
If the corresponding error could not be found, check the cause by following the
procedure shown below.
1. Check if all the boards installed on a personal computer are displayed with
the utility.
• Check on the board list screen (Refer to Section 9.2.2)
• Check on the Event Viewer screen (Refer to Section 14.3.2)
• Check on the Device Manager screen (Refer to Section 14.3.3)
2. Check the LED display of the board.
• Check the LED status ( Refer to Section 6.2 )
3. Check the error occurring at the utility.
• Check with test ( Refer to Section 6.5 )
• Check the network status with loop monitor ( Refer to Section 9.2.6 )
• Check the each station status ( Refer to Section 9.2.7 )
• Check the error history ( Refer to Section 9.2.8 )
4. Check the access target device.
• Check if the board operates as set to the parameter or program by
checking whether the link devices perform communication, or transient
send/receive performs normally with the device monitor utility.
(Refer to "MELSEC Data Link Library Reference Manual".)
• When unexpected value is input to the specific link device, refer to Section
14.5.1.
5. Check the user program.
• Check the arguments and returned values of the communication function.
(Refer to "MELSEC Data Link Library Reference Manual")
If the troubleshooting above does not help, refer to Section 14.9.
MELSEC
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