DENT Instruments PowerScout 3 HD User Manual

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DENT Instruments
PowerScout HD
RTU Programming & Scripting
RTU PROGRAMMING AND SCRIPTING - DETAILS
This section is intended for the programmer of an RTU or host system and includes
details about meter and element addressing, register locations, data formats, and
protocol examples.
Register Organization
The PSHD meter communicates through the reading and writing of registers. Registers are organized
into functional groups and are based on the SunSpec Modbus interface model.
 SunSpec Common Registers
 SunSpec TCP Network Stack Registers
 SunSpec Serial Interface Registers
 SunSpec Energy Meter
 DENT Factory Registers
 DENT User Command Registers
 DENT User Configuration Registers
 DENT Metrology Registers
 DENT Waveform Capture Registers
ELEMENT VS SYSTEM SCOPE
Element
The term “element” is used in two contexts. Physically, the term Element is used to describe groups of
three channel sections identified by an alphabetic letter on the silk screen of the PS12HD, PS24HD, or
PS48HD PCBA (i.e. A, B, C, D). In a three-phase power system, these correspond to electric circuits.
Logically, the term Element describes the scope of a data item, register, or point (Modbus register or
BACnet object). Each Element-based point is accessed by choosing the appropriate Modbus address,
BACnet object range, or BACnet structured view. Elements in turn have points that refer to individual
channels or to SUMS or AVERAGES of those channels. Registers that contain data inclusive of more than
one channel are identified as being either SUMS or AVERAGES of the enabled channels within an
element. In a BACnet structured view, an Element represents a level of organization for related points.
Channel
Channels are identified on the meter as CH1, CH2, or CH3 and represent physical CT inputs. In three-
phase system configurations, these correspond to a current load on a corresponding line voltage. In
single phase configurations, they are just used to identify a CT location. Registers providing data for an
individual channel are also described as elements in their scope as a unique value exists for each Slave
Address or BACnet object instance.
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DENT Instruments PowerScout 3 HD Specifications

General

Brand	DENT Instruments
Model	PowerScout 3 HD
Category	Measuring Instruments
Language	English