CIP Services and User-created Tags
52 Rockwell Automation Publication 1756-PM020F-EN-P - January 2019
The table that follows shows how to read the list of attributes for an instance
of the Template Object associated with the STRUCT_B example.
See also
Example of reading template attributes on page 52
This is an example of reading template attributes.
Message Request Field Bytes (in hex) Description
Request Service 03 Get Attributes, List Service (Request)
Request Path Size 03 Request Path is 3 words (6 bytes) long
Request Path 20 6C 25 00 E9 02 Logical Segment Class 0x6C, Instance ID 0x02E9
Request Data 04 00 Attribute Count
Request Data
04 00
05 00
02 00
01 00
Attribute List: Attributes 4, 5, 2 and 1 are requested
The response in the table contains a count of the items requested, followed
by a structured response for each item consisting of the attribute ID (16-bits),
status of retrieval (16-bits), and the attribute data (size varies).
Message Reply Field Bytes (in hex) Description
Reply Service 83 Get_Attributes_List Service (Reply)
Reserved 00
General Status 00 Success
Extended Status Size 00 No extended status
Reply Data 04 00 Count of Items returned
04 00
00 00
IE 00 00 00
Attribute 4, Template Object Definition Size
Status: 0000 = success
Size of the template definition structure in 32-bit words
05 00
00 00
20 00 00 00
Attribute 5, Template Structure Size
Status: 0000 = success
Number of bytes transferred on the wire when the structure is read using the Read Tag service
02 00
00 00
04 00
Attribute 2, Member Count
Status: 0000 = success
Number of members defined in the structure
01 00
00 00
CD 9E
Attribute 1, Structure Handle
Status: 0000 = success
Calculated CRC value for members of the structure.
The error codes may be returned by the Get_Attribute_List service to the
Template object.
Example of reading template
attributes
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