23.03.2017 Views

wilamowski-b-m-irwin-j-d-industrial-communication-systems-2011

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

DNP3 and IEC 60870-5 58-9<br />

all except the last ACK from the right-hand column of Figure 58.2). Associated with this sequence,<br />

there will also be two or maybe more TCP/IP confirmation frames. In DNP3, the same function might<br />

be performed with two or three DNP3 messages (depending if unsolicited reporting is used) and two<br />

or three TCP/IP confirmation frames. If larger amounts of data are involved, the number of DNP3 and<br />

T104 messages will increase.<br />

References<br />

1. IEC 60870-5-101 Ed. 2, Telecontrol Equipment and System—Part 5: Transmission protocols—<br />

Section 101: Companion standard for basic Telecontrol tasks, International Electrotechnical<br />

Commission, 2002; www.iec.ch<br />

2. IEC 60870-5-104 Ed. 2, Telecontrol equipment and <strong>systems</strong>—Part 5: Transmission protocols—<br />

Section 104: Network access for IEC 60870-5-101 using standard transport profiles, International<br />

Electrotechnical Commission, 2005, www.iec.ch<br />

3. DNP3 Specification, Ver. 2, vv. 1–8, DNP Users Group 2007–2009; www.dnp.org<br />

4. Leivo, E. and Newton, C., More than 80% of global utility respondents claim to have substation<br />

automation and integration programs underway, Newton-Evans Research Company Market Trends<br />

Digest, 28, 2–4, 2nd Quarter 2006.<br />

© <strong>2011</strong> by Taylor and Francis Group, LLC

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!