Implementation Agreements

DNP V3.0 Subset Definitions Document (Level 1, 2, & 3)

IEC 870-5-101: Basic telecontrol tasks (Communication with RTU's)

IEC 870-5-102: Transmission of integrated totals

IEC 870-5-103: “Informative interface” of protection equipment

IEC 870-5-104: Network access for IEC 870-5-101

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Slide 9 of 30

Notes:

IEC 870-5-101: published November 1995
IEC 870-5-102: published June 96
IEC 870-5-103: published December 1997
IEC 870-5-104: CDV February 1999

104: The ASDU's from IEC 870-5-101 are used, but the lower layers are based on standard transport profiles

101: Addendum adding new time-tag formats for event objects (RVC November 1998), addendum with supplementary definitions in preparation.

The 101, 102 and 103 profiles are essentially separate application protocols that have common design elements.

An interoperability checklist is used in 101 to identify the protocol subset supported by a device.

DNP specifies Subset Levels and a device profile document to identify interoperability between devices.