36 Rockwell Automation Publication 1756-PM020F-EN-P - January 2019
Services followed by byte offsets to the start of each service, followed by
each of the CIP requests, each following the standard Message Router
Request format.
Observe this example
Message Reply Field Bytes (in hex) Description
Reply Service 8A Multiple Service Packet Service (Reply)
Reserved 00
General Status 00 Success
Extended Status Size 00 No extended status
Reply Data 02 00 Number of Service Replies
06 00
10 00
Offsets for each Service Reply; from the start of the Reply Data
CC 00 00 00
C4 00
2A 00 00 00
Read Tag Service Reply, Status: Success
DINT Tag Type Value
Value: 0x0000002A (42 decimal)
CC 00 00 00
C4 00
DC 01 00 00
Read Tag Service Reply, Status: Success
DINT Tag Type Value
Value: 0x000001DC (476 decimal)
The Multiple Service Packet response follows the same Message Router
Response format as all CIP services; therefore, the General Status, Ext Status
Size fields are in the same CIP Service Request/Response Format as
described in previous examples. The Reply Data field contains the number of
service replies followed by the byte offset to the start of each reply, followed
by each of the CIP responses. Each of the responses follows the standard
Message Router Response format.
See also
Read Modify Write Tag Service on page 33
Multiple Service Packet Service on page 35
A structure is a compound data type that stores a group of possibly different
data types that function as a single unit and serve a specific purpose. (For
example, a combination of values.)
• A structure contains one or more members.
• Each member can be an:
• Atomic data type.
• Another structured data type.
• A single dimension array of an atomic or structure data type.
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