Allen-Bradley 22-COMM-E FRN 1.xxx, User Manual

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Using Explicit Messaging 6-3
ControlLogix Message Requests and Responses
Box Description
➊
Message Type
The message type must be CIP Generic.
➋
Service Type
The service type indicates the service (for example, Get Attribute Single or Set
Attribute Single) that you want to perform. Available services depend on the class
and instance that you are using. Refer to
Appendix C , EtherNet/IP Objects .
➌
Service Code
The service code is the code for the requested EtherNet/IP service. This value
changes based on the Service Type that has been selected. In most cases, this is
a read-only box. If you select “Custom” in the Service Type box, then you need to
specify a service code in this box (for example, 4B for a Get Attributes Scattered
service or 4C for a Set Attributes Scattered service).
➍
Class
The class is an EtherNet/IP class. Refer to Appendix C , EtherNet/IP Objects , for
available classes.
➎
Instance
The instance is an instance (or object) of an EtherNet/IP class. Refer to
Appendix C , EtherNet/IP Objects , for available instances for each class.
➏
Attribute
The attribute is a class or instance attribute. Refer to Appendix C , EtherNet/IP
Objects , for available attributes for each class or instance.
➐
Source Element
This box contains the name of the tag for any service data to be sent from the
scanner or bridge to the adapter and drive.
➑
Source Length
This box contains the number of bytes of service data to be sent in the message.
➒
Destination
This box contains the name of the tag that will receive service response data from
the adapter and drive.
➓
Path
The path is the route that the message will follow.
Tip: Click Browse to find the path or type in the name of an adapter that you
previously mapped.
Name
The name for the message.
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