ABB FSCA-01 User manual

ABB Drives
Modbus Protocol Manual
RS-485 Adapter Module
FSCA-01

RS-485 Adapter Module
FSCA-01
Modbus Protocol Manual
3AUA0000044530 REV A
EN
EFFECTIVE: 17.11.2008
©2008 ABB Oy. All Rights Reserved.

Safety instructions
5
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
6

Table of contents
7
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
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
8
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
Register addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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
9
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
10
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.