Emerson 400501-08 Drop Line, Epsilon Drive, Explicit Message, Explicit Messaging Connections

Epsilon Ei DeviceNet Drive Reference Manual

Drop Line

A DeviceNet cable that runs from the trunk of a system to a device.

EDS

Electronic Data Sheet file is a formatted ASCII file that contains configuration information of the device.

Epsilon Drive

The Epsilon drive is a digital positioning drive. In addition to the basic single axis motion control features, it provides advanced diagnostics and high speed communication capabilities.

Explicit Message

A message constructed within the master to poll a device for a single parameter. Explicit Messages occur in the background of implicit messaging.

Explicit Messaging Connections

Provide generic, multi-purpose communication paths between two devices. Explicit Messages provide the typical request/response oriented network communications.

Implicit Message

A message sent from the master to the slave as a way of passing data. Implicit messages transfer a predefined amount of data to and from the Master at a constant rate.

Index

An index is a set of parameters that defines position based motion including target position and velocity, and other parameters. The different types of indexes specify basic operation. Indexes are associated with digital input and outputs for the purposes of providing control and indication of the Index status.

Indexer

Another term for the Epsilon Ei drive, which is intended for indexing.

Instance

A sub-classification for a parameter or bit. The instance is grouped directly under the more broad category of attribute and allows for multiple occurrences of a parameter. Example: Class = Index, Attribute = Index Dwell, Instance1 = Index 0 Dwell, Instance2 = Index 1 Dwell. Each instance is assigned a unique number under its respective attribute.

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