FANUC Robotics America GFK-1541B Manuel D’Utilisation

0191H

Illegal Function. The function code received in the query is not an
allowable action for the server. This may be because the function
code is only applicable to newer controllers, and was not
implemented in the unit selected. It could also indicate that the
server is in the wrong state to process a request of this type, for
example because it was un-configured and is being asked to return
register status.

0291H

Illegal Data Address. The data address received in the query is not
an allowable address for the server. More specifically, the
combination of reference number and transfer length is invalid.

0691H

The server’s Service Request Queue is full, or the EEthernet
Interface received a Modbus Exception Code 06 SLAVE DEVICE
BUSY.

0791H

An internal server error occurred while attempting to process a
Modbus request. This corresponds to the Modbus exception 07
NEGATIVE ACKNOWLEDGE

Note:  If using a Modbus/TCP Server other than the IC693CMM321 and receive an error of the
form xx91H that is not listed in this table, please refer to the documetation provided with the
specific server for details on the meaning of the error.

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