Rockwell Automation 1757-FFLDC4 FOUNDATION Fieldbus System User Manual - Manual (Page 158)

158 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