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Practical_modern_SCADA_protocols_-_dnp3,_60870-5_and_Related_Systems

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Applications of DNP3 <strong>and</strong> <strong>SCADA</strong> <strong>protocols</strong> 389<br />

Some of the comm<strong>and</strong>s available <strong>and</strong> the general functionality can be seen in the<br />

following section.<br />

Diagnostics display mode<br />

This comm<strong>and</strong> is used to filter diagnostics displays when in diagnostic display mode. The<br />

format of DNPDIAG comm<strong>and</strong> is :<br />

DNPDIAG mode filter [filter ....]<br />

Where:<br />

mode = ENABLE or DISABLE<br />

filter = * 0 1 2 3 4 LINK NET TRANS APPL USER SOE COV<br />

The following filters can be individually enabled or disabled, <strong>and</strong> are retained in nonvolatile<br />

memory :<br />

0–4 Comms on DNP communication channels<br />

(0–3 = PORT 0–3, 4 = DIAG)<br />

LINK DNP link layer packets including bytes<br />

NET PDS DNP network layer results<br />

TRANS DNP transport layer information<br />

APPL DNP application layer information<br />

USER PDS User application request & response information<br />

SOE PDS DNP sequence of events binary event information<br />

COV PDS DNP change of value analog & floating point event info

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