User manual

IEC61131 User and Reference Manual
April 22, 2008
553
All Stations Tab
The All Stations tab displays the run-time communications diagnostics for all outstations polled by
the master or outstations reporting unsolicited data to the master.
The Communication Statistics window displays a list of all outstations and the communication
statistics for each station in the list. The statistics counters increment whenever a new DNP message
is sent or received, and roll over after 65535 messages. The following statistics are displayed.
 DNP Address displays the DNP address of the outstation.
 Successes display the number of successful message transactions between this master and the
corresponding remote station. This number includes master polls to the remote station and
unsolicited responses from the outstation.
 Fails displays the number of failed message transactions between this master and the
corresponding remote station. This counter increments by 1 for a failed message transaction
irrespective of the number of application layer retries.
 FailsNew displays the number failed message transactions between this master and the
corresponding remote station since the last successful poll.
 Msgs Rx displays the number of DNP packets (frames) received from the outstation station. This
number includes frames containing unsolicited responses from the outstation.
 Last Rx Msg Time displays the time the last DNP packet (frame) was received from the
outstation.
 Msgs Tx displays the number of DNP packets (frames) sent to the outstation.
 Last Tx Msg Time displays the time the last DNP packet (frame) was sent to the outstation.
Note: The Msgs Tx and Msgs Rx counters could be greater than or equal to the Successes
and Fails counters.