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5 TROUBLESHOOTING
5.5 Troubleshooting by Symptom
UCMM message communications cannot be performed
The following table lists the actions to be taken if UCMM message communications cannot be performed.
Check item Action
Are the settings of the commands to request correct? Check the value set in 'UCMM data link request command' (starting with Un\G393280).
Has communication start processing been performed
correctly with 'EtherNet/IP communication start request'
(Y10)?
• Check that 'EtherNet/IP communication start request' (Y10) is on.
• If 'EtherNet/IP data link continuation specification request' (Un\G16634) is set to 16 (continue
EtherNet/IP communication), turn 'EtherNet/IP communication start request' (Y10) on again.
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