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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
®
frequency
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
®
frequency converter and
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
®
frequency converter,
parameter access, programming, troubleshooting,
and some typical application examples.
Supplementary publications and manuals are available
from Danfoss. See
vlt-drives.danfoss.com/Support/Technical-
for listings.
1.3 Document and Software Version
This manual is regularly reviewed and updated. All
suggestions for improvement are welcome.
shows
the document version and the corresponding software
version.
Edition
Remarks
Software version
MG92F1xx
First edition.
4.4x
Table 1.1 Document and Software Version
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
Trunk line
Power supply
Drop lines 1
RT=Termination resistors
R
T
R
T
195NA228.10
1
1
1
1
Illustration 1.1 Topology
Introduction
Programming Guide
MG92F102
Danfoss A/S © 12/2015 All rights reserved.
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Содержание VLT DeviceNet MCA 104
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