Introduction; About This Manual; References; Trademarks - Danfoss VLT 2800 Manual

I I I I I Introduction
®
The VLT 2800 control board is program selectable
for use with the Johnson Controls Metasys N2
protocol. Metasys N2 is a master/slave control
network. The physical layer is RS-485 compatible,
half duplex 9600 baud shielded twisted pair. The N2
software protocol is designed to be general in
nature to accommodate the unique properties each
device type may have. Every device connection to
the N2 network can be thought of as a small data
manager. Data points in the database are classified
as analog I/O (floating point), binary I/O or integer
data points - floats, integers or bytes. Each data
type has its own unique structure defined in the
Metasys N2 system Protocol Specification for
Vendors.
The information in this manual is intended to provide
information on set up for VLT communication over a
Metasys network.
For specific information on operation of the drive,
refer to the VLT 2800 Operating Instructions.
I I I I I About This Manual
This manual is for both instructional and for
reference purposes. This manual can also serve as
a guideline when you specify and optimize your
communication system.
It is highly recommended that you read this manual
in its entirety before initiating any programming. It is
assumed that the user has full knowledge of the
capabilities and limitation of the controller node in
addition to full knowledge of the VLT 2800 drive.
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VLT ® 2800 Metasys N2
I I I I I References
In addition to this manual, the following two
manuals should be referenced:
VLT 2800 Operating Instructions, Danfoss
document number MG28Axxx.
Johnson Controls METASYS N2 System Protocol
Specification for Vendors, Johnson Controls number
04-3402-22.
I I I I I Trademarks
METASYS ® N2 is a Johnson Controls Inc registered
trademark.
VLT ® is a Danfoss registered trademark.
MG.90.C1.02 - VLT is a registered Danfoss trademark