Introduction To The Controller; Intended Audience; Before You Start; How To Use This Manual - Hitachi Abb Rvt Installation Und Betriebsanleitung

1. Introduction to the controller

1.1.

Intended audience

This manual is intended for programmers, commissioning people, supervision people who need to start communica-
tion, access data, and to develop supervision software which will interact with the Power Factor Controller RVT.
1.2.

Before you start

This manual describes the RVT data table. These data are accessible through RS485, USB, or Ethernet, using Mod-
bus RTU and TCP protocols or PQ-Link software.
All information available from the keyboard of the RVT will be available through the data table. Addresses, access lev-
els and protocol information are of concerns.
To be able to access data of the Power Factor Controller RVT consistently, a basic knowledge of it is needed. Func-
tionality of the RVT, meaning of various measurements, logging of data are some particular aspects that should be
familiar. Look in the RVT operating manual to know more about it.
1.3.

How to use this manual

Chapter 2 gives details concerning the Modbus protocol.
Chapter 3 describes Modbus functions and how Modbus is implemented in the controller.
Chapter 4 describes USB / TCP/IP protocol and how it is implemented in the controller.
Chapter 5 contains the table reference and formats to access measurements / settings data.
Chapter 6 describes the Windows DLL to handle USB / TCP/IP requests in a user specific application.
1.4.

Software protocols and physical interface

The RVT Power Factor Controller supports three communication protocols:
Modbus RTU and Modbus TCP
Three physical connections are available:
RS485 with the Modbus Adapter option
(Chapter 4).
The table below resumes the availability of communication protocols depending on the RVT type and the connection
provided.
Communication
protocol
RVT 6
RVT
RVT 12
Type
RVT 12-3P
STATUS
Approved
(Chapter 2 and 3) and PQ-Link protocol
(Chapter 2), USB
RS485 Modbus Adapter (option)
Modbus RTU
Modbus RTU
Modbus RTU
SECURITY LEVEL
Public
(Chapter
(Chapter 4), Ethernet-RJ45
Available connection
USB Ethernet-RJ45
PQ-Link Not available
PQ-Link Not available
PQ-Link PQ-Link and Modbus TCP
DOCUMENT ID
9AKK106713A9758
RVT CO MM UNI CATI O N
6).
REV. LANG. PAGE
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