User manual

IEC61131 User and Reference Manual
April 22, 2008
549
Overview Tab
The Overview Tab displays the run-time diagnostics for the local DNP station. The Overview
display is divided into five areas of diagnostic information: DNP Status, Internal Indications,
Communication Statistics, Last Message and Event Buffer. Each of these is explained in the
following paragraphs.
The DNP Status window provides information on the status of the DNP protocol running in the
controller. Depending on the status the window may contain the following text.
 Enabled or Disabled indicates whether the controller firmware supports DNP protocol.
 Configured or Not Configured indicates whether the controller has been configured with DNP
protocol on at least one communications port.
 Running or Not Running indicates whether the DNP tasks are running in the controller.
The Internal Indications window displays the current state of the DNP internal indications (IIN)
flags in the controller. For a detailed description of the IIN flags see the section 0 of this manual.
Note that bits 0 – 7 (the first octet) are displayed on the left, then bits 8 - 15 (second octet) on the
right.
The Communication Statistics window displays the message statistics for each DNP
communication port. The statistics include the total number of messages transmitted and received
and the total number of successes, failures, and failures since last success (which will only be
updated for messages sent by this controller) for each communication port. The counters increment
whenever a new DNP message is sent or received on the port, and roll over after 65535 messages.
 Click the Reset button to reset the counters to zero.