Danfoss VLT MCA 121 EtherNet/IP User Manual

5.1.4 Class 3 connection
Cyclic connection using UDP transport.
Maximum 6 Class 3 connections are supported.
This type of connection is used for explicit messaging. The connection is established with a Forward Open command, containing the following information:
Connection Name:
Given name for the connection
Message Parameters
- Service Code
- Class
- Instance
- Attribute
- Member
- Request Data
5.1.5 Unconnected Messages, UCMM
Non-cyclic (single) connection using TCP transport.
This type of connection is used for explicit messaging. The connection is established on-the-fly and does not require any Forward Open command.
Message Parameters
- Service Code
- Class
- Instance
- Attribute
- Member
- Request Data
Please refer to section Appendix for information on accessing CIP objects explicitly.
5.1.6 Control Word Profile
The Control profile is selected in par.8-10 Control Word Profile
- ODVA; gives access to the ODVA specific profiles and assembly instances: 20, 21, 70 and 71
- FC; enables the Danfoss profile and assembly instances: 100, 101, 103, 150, 151 and 153
For more information on the different profiles, please refer to the subsequent sections.
NB!
Change of control profile
It is only possible to change the Control profile while the drive is stopped. Control word and reference will not be recalculated to match
the selected profile, but are kept at the last good known value.
MCA 121 EtherNet/IP 5 How to Control
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Danfoss VLT MCA 121 EtherNet/IP Specifications

General

Brand	Danfoss
Model	VLT MCA 121 EtherNet/IP
Category	Control Unit
Language	English