Communication
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Connection Manager, Class 0x06
Class 1 Connections
Class 1 connections are used to transfer I/O data, and can be
established to the assembly object instances. Each class 1
connection establishes two data transports, one consuming and
one producing. The heartbeat instance is used for connections
that shall access only inputs or outputs. Total number of supported
class 1 connections is 31.
The first four bytes consumed by the device are defined as status
information (32-bit run/idle header). The header is not a
requirement in the EtherNet/IP specification, but most masters
today use this header. The module strips off the first four bytes of
data consumed by the device and interprets the Run/Idle bit.
Run/Idle operation for AC/DC Drive profile can be defined in
Control Supervisor Object’s (Class 0x29) attribute NetIdleMode
(20) and for ABB Drives profile in Configuration Object (Class
0x92) attribute IdleAction (7). (RETA-01 version 2.05 onwards)
Class 3 Connections
Class 3 connections are used to establish connections to the
message router. Thereafter the connection is used for explicit
messaging. Class 3 connections use TCP connections. The
Message router supports 16 simultaneous class 3 connections.
Rated packet Interval
The module supports a minimum RPI rate of 10 ms, and a
maximum of 3200 ms, for connections where the module is the
connection producer. Consuming connections are unlimited.
Motor Data Object, Class 0x28
This object serves as a database for motor parameters.
Services
Class services: Get Attribute Single
Instance services: Get Attribute Single
Set Attribute Single
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