Introduction; Purpose Of The Manual; Additional Resources; Document And Software Version - Danfoss VLT DeviceNet MCA 104 Programming Manual

Introduction

1 Introduction

1.1 Purpose of the Manual

®
The VLT DeviceNet MCA 104 Programming Guide provides
information about configuring the system, controlling the
frequency converter, parameter access, programming,
troubleshooting, and some typical application examples.
The programming guide is intended for use by qualified
personnel who are familiar with the VLT
converter, with DeviceNet technology, and with the PC or
PLC that is used as a master in the system.
Read the instructions before programming and follow the
procedures in this manual.
®
VLT is a registered trademark.

1.2 Additional Resources

Resources available for the VLT
optional equipment:
•
®
The VLT Operating Instructions provide the
necessary information for getting the VLT
frequency converter up and running.
•
®
The VLT Design Guide provides detailed
information about capabilities and functionality
to design motor control systems.
•
®
The VLT Programming Guide provides greater
detail on working with parameters and many
application examples.
•
®
The VLT DeviceNet MCA 104 Installation Guide
provides information about installing the
DeviceNet and troubleshooting.
•
®
The VLT DeviceNet MCA 104 Programming Guide
provides information about configuring the
system, controlling the VLT
parameter access, programming, troubleshooting,
and some typical application examples.
Supplementary publications and manuals are available
from Danfoss. See vlt-drives.danfoss.com/Support/Technical-
Documentation/ for listings.

1.3 Document and Software Version

This manual is regularly reviewed and updated. All
suggestions for improvement are welcome. Table 1.1 shows
the document version and the corresponding software
version.
Edition Remarks
MG92F1xx First edition.
Table 1.1 Document and Software Version
MG92F102
Programming Guide
®
frequency
®
frequency converter and
®
®
frequency converter,
Software version
4.4x
Danfoss A/S © 12/2015 All rights reserved.

1.4 Product Overview

This programming guide relates to the DeviceNet interface.
Ordering number:
•
130B1102 (non-coated version).
•
130B1210 (conformal coated version).
DeviceNet is a low-level network that standardizes
communications between industrial devices (sensors, limit
switches, motor controls) and high-level devices
(controllers). DeviceNet follows the Open Systems Intercon-
nection (OSI) model and is based on CAN technology for
media access control and physical signaling.
DeviceNet systems can be configured to operate in a
master/slave or a distributed control architecture using
peer-to-peer communication. Up to 63 nodes in a multi-
drop network topology are supported. By using the same
cable for communication, communication options can be
powered directly from the bus. Nodes can be removed or
inserted without powering down the network.
Each node on the network has its own unique media
access control identifier (MAC ID) to distinguish it on the
network. The access control is based on the CSMA/CA
(carrier sense multiple access/collision avoidance) principle,
meaning that all nodes may have access to the network at
the same time. When 2 nodes attempt to get control of
the network bus simultaneously, the CAN protocol resolves
the issue by arbitration. In this way, collisions on the
network are avoided.
DeviceNet defines device profiles for devices belonging to
specific classes. For other devices, define a custom class to
make it DeviceNet compatible. All the above enhances the
interchangeability and interoperability of the network.
24 V
Power supply
Trunk line
R
T
1 1
Drop lines 1
RT=Termination resistors
Illustration 1.1 Topology
R
T
1
1
3
1 1