Emerson EZMotion User Manual

Safety
Information
Introduction Installation
PowerTools
Pro Software
Communications
How
Motion
Works
How I/O
Works
Configuring
an
Application
Programming
Starting and
Stopping
Motion
Starting and
Stopping
Programs
Parameter
Descriptions
Drive
Parameters
Used by
EZMotion
Diagnostics Glossary Index
EZMotion User/Programming Guide 67
Revision A8 www.controltechniques.com
8.3.7 SM-Profibus DP Module View
If Profibus DP is selected in the Slot # Module list box, the remainder of the view should have configuration parameters to
define the properties of the Profibus device and network. The hierarchy tree automatically updates to show that a Profibus
module is populated in that specific slot, see Figure 71.
For SM-Profibus-DP module installation instructions, or other SM-Profibus-DP module information, please refer to the SM-
Profibus-DP User Guide.
Figure 71: Slot # View (SM-Profibus DP Module)
Node Address
The Node Address is the number assigned to a particular node on the Profibus network. Every node on a Profibus network
must have a unique node address with a range between 0 to 126.
Endian Format
When data is sent over the Profibus-DP network it is transmitted as 8-bit bytes. Therefore when a 32-bit word or 16-bit word is
transmitted it is split into four or two 8-bit bytes. It is important that the receiving node reconstruct the received 8-bit bytes in
the correct order to arrive at the 32-bit or 16-bit data value that was originally transmitted, this order is known as the "Endian
Format".
Most Profibus-DP master controllers use big endian format by default, many also support little endian. The default
configuration of Big Endian is consistent with the way most Profibus Master PLCs transfer their data.
Data Endian
Format
16-bit Value 32-bit Value
Byte Order Word Order Byte Order
Big
High byte first
Low byte second
High word first
Low word second
High byte first
Mid high byte second
Mid low byte third
Low byte fourth
Little
Low byte first
High byte second
Low word first
High word second
Low byte first
Mid low byte second
Mid high byte third
High byte fourth

Emerson EZMotion Specifications

General

Brand	Emerson
Model	EZMotion
Category	Control Unit
Language	English