16 Rockwell Automation Publication 1756-PM020F-EN-P - January 2019
These values are based on the CIP Data Type Reporting Values that are
defined in Volume 1, Appendix C of the CIP Networks Library, but are
extended to 16-bits.
The Request Path in a CIP explicit message contains addressing information
indicating which internal resource in the target node directs the service. This
addressing information is organized by using Logical Segments, Symbolic
Segments, or both.
For more detailed information about segments, see the CIP Networks
Library, Volume 1, Appendix C.
The following is a summary of the Logical Segment types defined by CIP
that are supported by the Logix 5000 controller.
See also
CIP services overview on page 13
These tables explain the Logical Segments. Not all segment types defined by
CIP are supported by Logix 5000 controllers.
Segment Type Value Byte Order Representation of Element ID Value (low byte first)
0 1 … n n+1
8-bit Element ID 0x28 Value N/A N/A N/A N/A
16-bit Element ID 0x29 00 Low High N/A N/A
32-bit Element ID 0x2A 00 Lowest Low High Highest
Segment Type Value Byte Order Representation of Class ID Value (low byte first)
0 1 … n n+1
8-bit Class ID 0x20 Value N/A N/A N/A N/A
16-bit Class ID 0x21 00 Low High N/A N/A
Segment Type Value Byte Order Representation of Instance ID Value (low byte first)
0 1 … n n+1
8-bit Instance ID 0x24 Value N/A N/A N/A N/A
16-bit Instance ID 0x25 00 Low High N/A N/A
To Next Page
Loading...
Need help?
General
