Danfoss MCA 122 Modbus TCP User Manual

Safety
Safety
Copyright, Limitation of Liability and
Revision Rights
This publication contains information proprietary to
Danfoss. By accepting and using this manual the user
agrees that the information contained herein is used solely
for operating equipment from Danfoss or equipment from
other vendors if such equipment is intended for communi-
cation with Danfoss equipment over an Ethernet serial
communication link. This publication is protected under
the Copyright laws of Denmark and most other countries.
Danfoss does not guarantee that a software program
produced according to the guidelines provided in this
manual functions properly in every physical, hardware, or
software environment.
Although Danfoss has tested and reviewed the documen-
tation within this manual, Danfoss makes no warranty or
representation, either express or implied, with respect to
this documentation, including its quality, performance, or
fitness for a particular purpose.
In no event shall Danfoss be liable for direct, indirect,
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the use, or the inability to use information contained in
this manual, even if advised of the possibility of such
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costs including but not limited to the damages incurred as
a result of lost profits or revenue, loss or damage of
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costs to substitute these, or any claims by third parties.
Danfoss reserves the right to revise this publication at any
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Safety Note
WARNING
HIGH VOLTAGE
The voltage of the frequency converter is dangerous
whenever connected to mains. Incorrect installation of the
motor, frequency converter, or fieldbus may damage the
equipment, cause serious personal injury, or death.
Consequently, the instructions in this manual, as well as
national and local rules and safety regulations, must be
complied with.
Safety Regulations
1. The frequency converter must be disconnected
from mains before carrying out repair work.
Check that the mains supply has been discon-
nected and that the necessary time has passed
before removing motor and mains plugs.
2. The off-command on the serial bus does not
disconnect the equipment from mains and should
not be used as a safety switch.
3. Correct protective earthing or grounding of the
equipment must be established. The user must
be protected against supply voltage, and the
motor must be protected against overload in
accordance with applicable national and local
regulations.
4. The earth leakage currents are higher than 3.5
mA.
5. Do not remove the plugs for the motor and
mains supply while the frequency converter is
connected to mains. Check that the mains supply
has been disconnected and that the necessary
time has passed before removing motor and
mains plugs.
Safety MCA 122 Modbus TCP
MG90P202 - VLT
®
is a protected Danfoss trademark

Danfoss MCA 122 Modbus TCP Specifications

General

Brand	Danfoss
Model	MCA 122 Modbus TCP
Category	DC Drives
Language	English

Summary

Safety

Copyright, Limitation of Liability and Revision Rights

Outlines Danfoss's copyright, liability limitations, and rights to revise the publication.

Safety Regulations

Lists mandatory safety practices and precautions for operating the frequency converter.

Warning Against Unintended Start

Details risks and precautions to prevent accidental starting of the motor.

Introduction

About This Manual

Provides essential information for quick installation and setup, and details for further study.

Assumptions and Background Knowledge

Outlines prerequisites, assumed knowledge, and scope of the manual for Modbus Option Card.

Available Literature and Modbus Conformance

Lists related documents and confirms compliance with Modbus standards.

Abbreviations

Lists and defines abbreviations used throughout the manual for clarity.

How to Install

The Modbus TCP Option

Details the installation of the MCA 122 Modbus TCP option into the frequency converter.

LED Behaviour and Status

Explains the function of the option's LEDs for module and network status.

Network Topology Options

Describes star and line topologies for connecting Modbus TCP options.

Network Design Rules

Covers Ethernet media selection, cable length, and design rules for reliable network operation.

EMC Precautions

Provides guidelines for minimizing electromagnetic interference for network operation.

How to Configure

IP Settings

Details parameters for configuring the option's IP address, subnet mask, and gateway.

Ethernet Link Parameters

Explains parameters related to the Ethernet link status, speed, and negotiation.

Configuring the Scanner

Guides on setting up a scanner (PLC) to communicate with the frequency converter.

IP Traffic Considerations

Discusses important aspects of IP traffic for industrial automation networks.

How to Control

Controlling the Frequency Converter

Explains how to control the frequency converter using Modbus TCP messages.

Modbus TCP Message Structure

Details the components and fields of a Modbus TCP message for communication.

Modbus Message Details

Covers IND, text blocks, conversion factors, parameter values, and exception codes.

PROFIdrive Control Profile

Describes the PROFIdrive control word (CTW) for sending commands to the slave.

PROFIdrive Status Word

Explains the PROFIdrive status word (STW) for notifying the master about the slave's status.

PROFIdrive State Diagram

Illustrates state transitions for the PROFIdrive control profile.

Reference Handling

Details how to manage speed references, including bus speed value scaling.

Danfoss FC Control Profile

Describes the control word for the Danfoss FC profile, including bits and explanations.

FC Status Word

Explains the FC status word (STW) for notifying the master about the frequency converter's status.

Parameters

Parameter Group 8-**

Details settings for control site, control word source, timeout functions, and end-of-timeout actions.

Parameter Group 12-**

Covers IP settings, Ethernet link parameters, process data, and Modbus TCP configurations.

Ethernet Services and Settings

Configures FTP, HTTP, SMTP services, cable diagnostics, and network storm protection.

Parameter List

Provides a comprehensive list of parameters with their default values and types.

Data Types and Conversion

Explains data types and provides a conversion index for parameters.

Troubleshooting

Step-by-Step Troubleshooting

Provides a guided approach to diagnose and resolve issues with LEDs, link status, cabling, and IP address.

Alarm and Warning Words

Explains how alarm and warning words are displayed and their meaning.