KEYENCE CB-EP100 User Manual

Page 59

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3-4 Message Communication

3-35

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- EtherNet/IP Network Unit CB-EP100 User’s Manual (LJ-V7000 Edition) -

In EtherNet/IP (CIP), the method called "object modeling" is used to
express a device. The device is handled as a group of objects. Objects
abstractly express the configuration elements in the device. A class is a
group of objects expressing the configuration elements of the same
type. An instance actually expresses a specific object contained in a
class. Each instance in the class has the same attribute group, but each
attribute value is unique.

To execute a service for CB-EP100, send a command from the scanner.
The CB-EP100 then returns the service execution results as a response.
A command requires a service code, class ID (Class ID), instance ID
(Instance ID) and attribute ID (Attribute ID)*. When a parameter is
written, the command also requires a setting value (service data)*.

*

Some of the commands to be used may not require the above items.

"Basic Format and Processing Flow of Message Communication"

(Page 3-37)

Reference

Command

Response

㨯Service code

㨯Class ID

㨯Instance ID

㨯Attribute ID*

㨯Service data*

㨯General Status

㨯Additional Status*

㨯Service response data*

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