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Parameter 4670 "Optionbus activity" can be used to configure drive operation
in the loss of communication condition. The default setting is "Disable", which
indicates that the drive must be disabled. This parameter may also be set to
"Warning", in which case the drive can continue to operate, but an error message
is displayed. For further details please consult the drive manual.
With Gf_eXpress you can obtain a description of what caused the "Opt bus fault"
alarm, by logging on to the relative HTML page as shown in the figure below:
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