Rockwell Automation PLC-5 Fieldbus Solutions for Integrated Architecture User Manual - Manual (Page 79)

Publication 1757-UM006A-EN-P - May 2002
Integrating Fieldbus into Rockwell Automation Logix System 2-35
Alert Object Formal Model
The alert object allows block alarms and events to be reported to a
device responsible for alarm management.
Class: Alert
Subclass of: Root
Attributes:
1. (m) (r) DD Member Id
2. 2. (m) (Key) Index
3. 3. (m) (r) Data Type
3.1 (m) (r) Meta Type = RECORD
3.2 (m) (r) Type Name = Alert
4. (m) (r) Sub-index
4.1 (m) (r) Block Index - Unsigned16
4.2 (m) (r) Alert Key - Unsigned8
4.3 (m) (r) Standard Type - Unsigned8
4.4 (m) (r) Mfr Type - Unsigned8
4.5 (m) (r) Message Type - Unsigned8
4.6 (m) (r) Priority - Unsigned8
4.7 (m) (r) Time Stamp - Time Value
5. (m) (r) Data Length
6. (m) (r) Units = “ “
7. (m) (r) Usage = CONTAINED
8. (m) (r) Storage = DYNAMIC
9. (m) (r) List of Valid Values
Standard type enumerations 0-12 are defined. Message type
enumeration’s 0-3 are defined - see attribute definitions.
10. (m) (r) Initial Value
11. (m) (r) DD Item Id
Services:
1. (m) FB_Alert_Notify
2. (m) FB_Alert_Ack