Rockwell Automation Publication 1756-PM020F-EN-P - January 2019 73
Read the tag myDstruct4[0].myarray[1].today.hourlyCount[3] in the
controller, which is a one dimensional array of type STRUCT_D.
Message Request Field Bytes (in hex) Description - Symbolic Segment Addressing
Request Service 4C Read Tag Service (Request)
Request Path Size 19 Request Path is 25 words (50 bytes) long
Request Path 91 0A 6D 79 44 73 74 72 75 63 74 34
28 00
91 07 6D 79 61 72 72 61 79 00
28 01
91 05 74 6F 64 61 79 00
91 0B 68 6F 75 72 6C 79 43 6F 75 6E 74 00
28 03
ANSI Ext. Symbolic Segment for myDstruct4,
Element ID for element 0
ANSI Ext. Symbolic Segment for myarray
Element ID for element 1
ANSI Ext. Symbolic Segment for today
ANSI Ext. Symbolic Segment for hourlyCount
Element ID for element 3
Request Data 01 00 Number of elements to read (1)
Message Reply Field Bytes (in hex) Description - Symbolic Segment Addressing
Reply Service CC Read Tag Service (Reply)
Reserved 00
General Status 00 Success
Extended Status Size 00 No extended status
Reply Data C3 00 INT Tag Type Value
D0 5C 0x5CD0=23760 decimal
See also
Access User-Defined Structures on page 69
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