Toshiba V Series User Manual page 210

Chapter 8 Error Handling
8
190
(b) Operating mode control request
Start
Is the operating mode
control request executed ?
Yes
Is the USEND_T instruction
completed ?
Yes
Have the parameters not
been set up yet ?
Yes
Check the completion status and
eliminate the cause of the error.
End
Set up the correct information as
No
specified and issue an operating
mode control request.
Confirm the status when the
No
USEND_T or URCV_T is not
completed.
The EN311 internal MAC address has
No
been corrupted.
Replace the module.
Ethernet module User's Manual