ABB FSCA-01 Manuale utente

ABB Drives

Modbus Protocol Manual

RS-485 Adapter Module

FSCA-01

RS-485 Adapter Module

FSCA-01

Modbus Protocol Manual

3AUA0000044530 REV A

EFFECTIVE: 17.11.2008

Safety instructions

Overview

This chapter states the general safety instructions that must be

followed when installing and operating the FSCA-01 RS-485

Adapter Module.

The material in this chapter must be studied before attempting any

work on, or with, the unit.

In addition to the safety instructions given below, read the

complete safety instructions of the specific drive you are working

on.

General safety instructions

WARNING! All electrical installation and maintenance work on the

drive should be carried out by qualified electricians.

The drive and adjoining equipment must be properly earthed.

Do not attempt any work on a powered drive. After switching off

the mains, always allow the intermediate circuit capacitors 5

minutes to discharge before working on the frequency converter,

the motor or the motor cable. It is good practice to check (with a

voltage indicating instrument) that the drive is in fact discharged

before beginning work.

The motor cable terminals of the drive are at a dangerously high

voltage when mains power is applied, regardless of motor

operation.

There can be dangerous voltages inside the drive from external

control circuits even when the drive mains power is shut off.

Exercise appropriate care when working on the unit. Neglecting

these instructions can cause physical injury or death.

Safety instructions

Table of contents

Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

General safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Table of contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Intended audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Before you start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

What this manual contains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Further information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Modbus/RTU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Modbus/RTU on FSCA-01 RS-485 Adapter Module . . . . . . . . . . . . . . . . . . 11

Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Drive configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Modbus connection configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Control locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Master configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Configuring the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Modbus register maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Table of contents

Communication profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Communication profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

ABB Drives communication profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Control Word and Status Word . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Actual values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Function codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Encapsulated interface transport / Read device identification . . . . . . . . . . . 37

Exception codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Communication profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

ABB Drives Profile - Classic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

ABB Drives Profile - Enhanced . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Transparent 16-bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Transparent 32-bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

LED indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Internal error code registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Introduction

Intended audience

The manual is intended for people responsible for installing,

commissioning and using an FSCA-01 RS-485 Adapter Module

for Modbus/RTU communication. The reader is expected to have

basic knowledge of electrical fundamentals, electrical wiring

practices and operating of the drive.

Before you start

It is assumed that the drive is installed and ready to operate before

starting the installation of the extension module.

In addition to conventional installation tools, have the drive

manuals available during the installation as they contain important

information not included in this manual. The drive manuals are

referred to at various points of this document.

What this manual contains

This manual contains information on the configuration and use of

the FSCA-01 RS-485 Adapter Module with the Modbus/RTU

protocol.

Safety instructions are featured in the first few pages of this

manual.

Overview contains short descriptions of the Modbus/RTU protocol

and the adapter module.

Drive configuration explains how to program the drive before the

communication through the adapter module can be started.

Master configuration explains how to program the Modbus/RTU

master before communication through the adapter module can be

started.

Introduction

Communication profiles describes the communication profiles

used in the communication between the Modbus/RTU master, the

adapter module and the drive.

Communication contains a description of the Modbus/RTU

functionality supported by the adapter module.

Diagnostics explains how to trace faults with the status LEDs on

the adapter module.

Definitions explains definitions and abbreviations concerning

Modbus/RTU on the adapter module.

Further information

Further information on the Modbus/RTU protocol is available on

the world wide web from www.modbus.org.

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