
Doc# E149701 C - 1
C: DNP Mapping
Electro Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
Electro Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
C: DNP Mapping
C.1: Overview
This Appendix describes the functionality of the Shark® 200 meter's version of the
DNP protocol. A DNP programmer must follow this information in order to retrieve
data from the Shark® 200 meter. The DNP used by the Shark 200 is a reduced set of
the Distributed Network Protocol Version 3.0 subset 2; it gives enough functionality to
get critical measurements from the Shark® 200 meter.
The Shark® 200 meter's DNP version supports Class 0 object/qualifiers 0,1,2,6, only.
No event generation is supported. The Shark® 200 meter always acts as a secondary
device (slave) in DNP communication.
A new feature allows DNP readings in primary units with user-set scaling for current,
voltage, and power. (See Chapter 5 in the Communicator EXT User Manual for instruc-
tions.)
C.2: Physical Layer
The Shark® 200 meter's DNP version uses serial communication. It can be assigned
to Port 2 (RS485 compliant port) or any communication capable option board. Speed
and data format is transparent for the Shark® 200 meter's DNP version: they can be
set to any supported value. The IrDA port cannot use DNP.
C.3: Data Link Layer
The Shark® 200 meter can be assigned with a value from 1 to 65534 as the target
device address. The data link layer follows the standard frame FT3 used by the DNP
Version 3.0 protocol, but only 4 functions are implemented: Reset Link, Reset User,
Unconfirmed User Data, and Link Status, as depicted in the following table.
Table C.1: Supported Link Functions
Function Function Code
Reset Link 0
Reset User 1
Unconfirmed User Data 4
Link Status 9
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