KEYENCE CB-EP100 User Manual
Page 59
3-4 Message Communication
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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"
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*