Rockwell Automation RECOMM-DNET DeviceNet Adapter for use with DPI AC Drives User Manual

Page 69

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Using Explicit Messaging

7-3

Table 7.1 – ControlLogix Message Requests and Responses

Box

Description

Message Type
The message type must be CIP Generic.

Service Code
The service code is the requested DeviceNet service.
Available services depend on the class and instance
that you are using. Refer to Appendix C, DeviceNet
Objects.

Object Type
The object type is a DeviceNet class. Refer to
Appendix C, DeviceNet Objects, for available classes.

Object ID
The object ID is an instance of a DeviceNet class. Refer
to Appendix C, DeviceNet Objects, for available
instances.

Object Attribute
The object attribute is a class or instance attribute. Refer
to Appendix C, DeviceNet Objects, for available classes.

Source
This box contains the name of the tag for any service
data to be sent from the scanner to the adapter and
drive. A tag must be specified even if it is not used.

Num. of Elements
This box contains the number of bytes of service data to
be sent or received in the message.

Destination
This box contains the name of the tag that will receive
service response data from the adapter and drive. A tag
must be specified even if it is not used.

Path
The path includes the following:

• Name of the DeviceNet scanner.

• Communication port on the front of the 1756-DNB

scanner. Always 2.

• Node address of the DeviceNet adapter. This is set

with switches or parameters in the DeviceNet adapter.

Click Browse to find the path or type in the name of a
adapter that you previously mapped.

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