Rockwell Automation 1757-FFLDC4 FOUNDATION Fieldbus System User Manual - Manual (Page 157)

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