ABB ACS355 User Manual

312 Fieldbus control with embedded fieldbus
Modbus mapping
The following Modbus function codes are supported by the drive.
 Register mapping
The drive parameters, Control/Status word, references and actual values are mapped
to the area 4xxxx so that:
• 40001…40099 are reserved for drive control/status, reference and actual values.
• 40101…49999 are reserved for drive parameters 0101…9999 (eg 40102 is
parameter 0102). In this mapping, the thousands and hundreds correspond to the
Function Code
hex (dec)
Additional information
Read Multiple
Holding
Registers
03 (03) Reads the contents of registers in a slave device.
Parameter sets, control, status and reference values are mapped
as holding registers.
Write Single
Holding
Register
06 (06) Writes to a single register in a slave device.
Parameter sets, control, status and reference values are mapped
as holding registers.
Diagnostics 08 (08) Provides a series of tests for checking the communication between
the master and the slave devices, or for checking various internal
error conditions within the slave.
The following subcodes are supported:
00 Return Query Data: The data passed in the request data field is
to be returned in the response. The entire response message
should be identical to the request.
01 Restart Communications Option: The slave device serial line
port must be initialized and restarted, and all of its communication
event counters cleared. If the port is currently in Listen Only Mode,
no response is returned. If the port is not currently in Listen Only
Mode, a normal response is returned before the restart.
04 Force Listen Only Mode: Forces the addressed slave device to
Listen Only Mode. This isolates it from the other devices on the
network, allowing them to continue communicating without
interruption from the addressed remote device. No response is
returned. The only function that will be processed after this mode is
entered is the Restart Communications Option function (subcode
01).
Write Multiple
Holding
Registers
10 (16) Writes to the registers (1 to approximately 120 registers) in a slave
device.
Parameter sets, control, status and reference values are mapped
as holding registers.
Read/Write
Multiple
Holding
Registers
17 (23) Performs a combination of one read operation and one write
operation (function codes 03 and 10) in a single Modbus
transaction. The write operation is performed before the read
operation.

ABB ACS355 Specifications

General

Input Voltage	200 V to 240 V AC, 380 V to 480 V AC
Frequency	47 Hz to 63 Hz
Control Method	Scalar control
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overtemperature, Short circuit
Communication Interfaces	Modbus RTU, CANopen
Enclosure Rating	IP20
Operating Temperature	-10°C to +50°C (14°F to 122°F)
Storage Temperature	-40°C to +70°C (-40 to +158 °F)
Humidity	95% RH (non-condensing)
Altitude	Up to 1000 m (3280 ft) without derating

Summary

Safety

Use of Warnings

Explains warning symbols and their significance for safety.

Planning the Electrical Installation

Selecting the Supply Disconnecting Device

Specifies requirements for the disconnecting means.

Electrical Installation

Connecting the Power Cables

Provides diagrams and procedures for power cable connections.

Connecting the Control Cables

Installation Checklist

Checking the Installation

A comprehensive checklist for mechanical and electrical installation verification.

Start-up, Control with I/O and ID Run

How to Start Up the Drive

Guides on initiating drive start-up procedures.

Program Features

Start-up Assistant

Guides the user through drive start-up with requested data entry.

Fieldbus Control with Embedded Fieldbus

Setting up Communication through the Embedded Modbus

Configuration steps for Modbus communication.

Fieldbus Control with Fieldbus Adapter

Setting up Communication through a Fieldbus Adapter Module

Configuration steps for fieldbus adapter communication.

Fault Tracing

Alarm and Fault Indications

Lists alarm and fault messages, causes, and corrective actions.

How to Reset

Details on how to reset faults and alarms.

Technical Data

Ratings

Presents drive types, input/output ratings, and frame sizes.

Dimensions, Weights and Free Space Requirements

Appendix: Resistor Braking

Selecting the Brake Resistor

Appendix: Extension Modules

Installing the Extension Module

Appendix: Safe Torque Off (STO)

Basics

Explains the fundamental principles of the Safe Torque Off function.

Operation of the STO Function and its Diagnostics Function