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8.5 Troubleshooting
8
(3) When the EN311 fails to enter run mode
This section assumes that the module has started normally up to this point. Note that 
the parameters must be set up with a parameter setup request before issuing the 
operating mode control request used to switch the module from standby mode to run 
mode.
(a) Parameter setup request
Start 
End 
Set up the IP address and the 
message transmission UDP port 
number. 
Confirm the status when the 
USEND_T or URCV_T is not 
completed.  
Fasten the setscrew. 
Is the operating mode 
control request executed ?
Is the USEND_T instruction 
completed ? 
Check the completion status and 
eliminate the cause of the error. 
No
No
Yes 
Yes 
To the operating mode control request