Ds-70 - access permissions, Ds-72 - discrete alarm structure, Ds-73 - event update 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
157
Data Types and Data Structures Appendix B
DS-70 - Access Permissions
This data structure consists of access control flags for access to block parameters.
DS-72 - Discrete Alarm Structure
This data structure consists of data that describes discrete alarms.
DS-73 - Event Update Structure
This data structure consists of data that describes a static revision alarm.
Table 19 - Access Permissions - DS-70
E
Element Name
Data Type
Size (bytes)
1
Grant
Bit String
1
2
Deny
Bit String
1
Table 20 - Discrete Alarm Structure - DS-72
E
Element Name
Data Type
Size (bytes)
1
Unacknowledged
Unsigned8
1
2
Alarm State
Unsigned8
1
3
Time Stamp
Time Value
8
4
Subcode
Unsigned16
2
5
Value
Unsigned8
1
Table 21 - Event Update Structure - DS-73
E
Element Name
Data Type
Size (bytes)
1
Unacknowledged
Unsigned8
1
2
Update State
Unsigned8
1
3
Time Stamp
Time Value
8
4
Static Revision
Unsigned16
2
5
Relative Index
Unsigned16
2
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