Communication profiles
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Communication profiles
Overview
This chapter describes the communication profiles used in the
communication between the Modbus/TCP and Ethernet/IP
networks, the RETA-01 module, and the drive.
Communication profiles
Communication profiles are ways of conveying control commands
(Control word, Status word, references and actual values)
between the master station and the drive.
With the RETA-01 module, the Ethernet/IP network may employ
either the ODVA AC/DC drive profile or the ABB Drives profile.
Modbus/TCP network may employ only the ABB Drives profile.
The ODVA AC/DC drive profile
This section briefly describes the ODVA AC/DC Drive profiles.
Additional information can be obtained from www.odva.org
.
An Ethernet/IP node is modelled as a collection of abstract
objects. Each object represents the interface to and behaviour of a
component within the product. The ODVA AC/DC Drive Profiles
define a collection of objects suitable for the control of AC and DC
drives. Objects supported by the RETA-01 Ethernet Adapter are
listed in section Class objects on page 63. Objects are defined by:
• Service
•Class
• Instance
•Attribute
• Behaviour
For example, to set the drive speed reference, the
Set_Attribute_Single service can be requested for Attribute
SpeedRef of the Class AC/DC Drive Object. The resulting
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