Danfoss MCA 122 Modbus TCP User Manual

Contents
1 Introduction
3
1.1 Introduction
3
1.1.1 About this Manual 3
1.1.2 Assumptions 3
1.1.3 Background Knowledge 3
1.1.4 Available Literature 3
1.1.5 Modbus Conformance 3
1.1.6 Abbreviations 4
2 How to Install
5
2.1 The Modbus TCP Option
5
2.1.1 How to Install Option in Frequency Converter 5
2.1.2 LED Behaviour 6
2.1.3 Topology 7
2.1.4 Network 8
2.1.5 Recommended Design Rules 8
2.1.6 EMC Precautions 10
3 How to Configure
11
3.1 IP Settings
11
3.2 Ethernet Link Parameters
11
3.3 Configuring the Scanner
12
3.4 IP Traffic
15
4 How to Control
17
4.1 How to Control the Frequency Converter
17
4.1.1 Function Codes Supported by Modbus TCP 17
4.2 Modbus TCP Message Framing Structure
17
4.2.1 Function Code 17
4.2.2 Data Field 17
4.2.3 Parameter Handling 17
4.2.4 Storage of Data 17
4.2.5 IND 18
4.2.6 Text Blocks 18
4.2.7 Conversion Factor 18
4.2.8 Parameter Values 18
4.2.9 Modbus Exception Codes 18
4.3 PROFIdrive Control Profile
19
4.3.1 Control Word according to PROFIdrive Profile (CTW) 19
4.3.2 Status Word according to PROFIdrive Profile (STW) 20
Contents MCA 122 Modbus TCP
MG90P202 - VLT
®
is a protected Danfoss trademark 1

Danfoss MCA 122 Modbus TCP Specifications

General

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