Odva Ac/Dc Drive Profile; Odva Output Attributes - ABB FDNA-01 User Manual

ODVA AC/DC drive profile

This section briefly describes the ODVA AC/DC drive profile.
Additional information can be obtained at www.odva.org.
A DeviceNet node is modelled as a collection of abstract objects.
Each object represents the interface to and behavior of a
component within the product. The ODVA AC/DC drive profile
defines a collection of objects suitable for the control of the AC and
DC drives. The objects supported by the FDNA-01 DeviceNet
adapter are listed in Class objects on page 107.
The objects are defined by:
•
Service
•
Class
•
Instance
•
Attribute
•
Behavior.
For example, to set the drive speed reference, the
Set_Attribute_Single service can be requested for the SpeedRef
attribute of the AC/DC drive object class. The resulting behavior is
that the reference speed of the drive is set to the requested value.
This is an example of explicit messaging, where each attribute of a
class is set individually. While this is allowed, it is inefficient.
Instead, implicit messaging using input and output assembly
instances is recommended. Implicit messaging allows the
DeviceNet Master to set or get predefined groups of attributes in a
single message exchange. The assembly instances supported by
the adapter module are listed and defined in Assembly objects on
page 74.

ODVA output attributes

This section briefly describes the instances found in the output
assemblies of the ODVA AC/DC drive profile. Note that all output
assembly instances do not support all attributes listed here.
Communication profiles 79