Overview - ABB DNP31.0 Technical Description

Overview

This chapter contains a short description of the DeviceNet standard and the DNP31 DeviceNet Interface module.
DeviceNet Standard
The DeviceNet network has a linear bus topology. Terminating resistors are required on each end of the trunk line. Drop lines
as long as 6 metres (20 feet) each are permitted, allowing one or more nodes to be attached. DeviceNet allows branching
structures only on drop lines.
The DeviceNet Communication Interface
The DNP31 communication interface is an optional device for the UMC100.3 which enables the connection of the
UMC100.3 to a DeviceNet system. The UMC100.3 is considered as a slave in the DeviceNet network.
• Use UMC100.3 to set bus address and baud rate (or autobaud) of the DeviceNet communication. Once the address
is set, it is stored in the DNP31, even in case of supply voltage breakdown.
Through the DNP31 DeviceNet communication interface it is possible to:
• give control commands to the drive (Start, Stop etc.)
• read status information and actual values from the drive
• read and write UMC100.3 parameter values
• reset a UMC100.3 trip.
The DNP31 acts as a Class 2 only slave with predefined master-slave connection set services. These include the
Explicit Messaging, the Poll-Response service and the Change of State/Cyclic service. The DeviceNet commands and
services supported by the DNP31 DeviceNet communication interface are discussed in chapter Communication.
DNP31
NS MS
From Top
Issue: 09.2015
Dual colour
LEDs for
status display
X3:
DeviceNet
Connector
X3:
DeviceNet Connector
X1: Interface to
UMC100.3
From Side
- 5 -
Data sheet DNP31.0