Ds-74 - alarm summary structure, Ds-85 - test structure – Rockwell Automation 1757-FFLDC4 FOUNDATION Fieldbus System User Manual User Manual
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Rockwell Automation Publication 1757-UM012A-EN-P - July 2011
Appendix B Data Types and Data Structures
DS-74 - Alarm Summary Structure
This data structure consists of data that summarizes 16 alerts.
DS-85 - Test Structure
This data structure consists of function block test read/write data.
Table 22 - Alarm Summary Structure - DS-74
E
Element Name
Data Type
Size (bytes)
1
Current
Bit String
2
2
Unacknowledged
Bit String
2
3
Unreported
Bit String
2
4
Disabled
Bit String
2
Table 23 - Test Structure - DS-85
E
Element Name
Data Type
Size (bytes)
1
Value1
Boolean
1
2
Value2
Integer8
1
3
Value3
Integer16
2
4
Value4
Integer32
4
5
Value5
Unsigned8
1
6
Value6
Unsigned16
2
7
Value7
Unsigned32
4
8
Value8
FloatingPoint
4
9
Value9
VisibleString
32
10
Value10
OctetString
32
11
Value11
Date
7
12
Value12
Time of Day
6
13
Value13
Time Difference
6
14
Value14
Bitstring
2
15
Value15
Time Value
8
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