Chapter 9 - Register Map Profile; Introduction; Summary Of Data Conversion - Veesta World V-PM2000 Series User Manual

VP-2040 Enhanced IED
V-PM2000 Series, Veesta Power Measurement
Instructions & User's Manual
Chapter 9 -
9.1

Introduction

9.2

Summary of Data Conversion

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Register Map Profile
This chapter describes about Modbus Register Map table and profile.
To have better view on all of parameters of VP-2040 you must
consider bellow items to communicating and translating data of
registers.
o In this section all of references to the hexadecimal register
number, byte number, word number and bit numbers all start
from "Zero".
The raw value of each memory register based on the unit value and
data format and scale factor can be analyzed by master. For
example, the calculation factor of the power factor register is 0.001.
When the value read by the user via raw value of corresponding
register as example like 892, the real current power factor will be:
892 × 0.001 = 0.892.
It is called also Engineering Value conversion. In this section we
listed summary for most common use of power parameters in VP-
2040. For the bellow table also review the bellow terms:
 Rx: Rx shows the raw value read from VP-2040 via
corresponding register value.
 PTR: It is PT ratio of Primary per Secondary setting. For
example for system with 20kV in primary and 100V
transformer
PTR = 20000/100 = 200
 CTR: It is CT ratio of Primary per Secondary setting. For
example for system with 300A in primary and 5A in
secondary so the CTR will be CTR = 300 / 5 = 60

Chapter 9 - Register Map Profile

in secondary so the PTR will be
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