Instruction Manual

Logic Functions - Book 1
SYSTEM EVENT BLOCK
3-42
19 GROUP 5 DIAGNOSTICS ENABLED
20 GROUP 6 DIAGNOSTICS SUPPRESSED
21 GROUP 6 DIAGNOSTICS ENABLED
22 GROUP 7 DIAGNOSTICS SUPPRESSED
23 GROUP 7 DIAGNOSTICS ENABLED
24 SYSTEM EVENT QUEUE CLEARED
3.4.5 Event Transitions
Events have transition codes (internal to communications) and text associated with them.
Table
3-3 lists the event transition codes and descriptions. These transition codes apply
to all events for all blocks.
Table 3-3. Event Transition Codes and Descriptions
Event
Trans.Code
Appended
Text
Description
0 An informational event. No appended text required.
1 uak-only Indicates the acknowledge only diagnostic has occurred.
2 uak-only Indicates the acknowledge only diagnostic has occurred.
3 act/uak Indicates the event has gone active and unacknowledged.
4 act/ack Indicates the process alarm has gone active but not unacknowledged
because its priority level is zero.
5 act/uak Indicates the event has gone active while it was unacknowledged.
6 clr/uak Indicates the event has cleared while it was unacknowledged.
7 clr/ack Indicates the event has cleared after it was acknowledged.
8 clr-supp Indicates the event was cleared by one of the suppression methods.
9 acked Indicates the event was acknowledged by a single ack message.
10 glbl ack Indicates the event was acknowledged by one of the global ack
methods.
11 ack-supp Indicates the event was acknowledged by one of the suppression
methods.
12 supp Indicates the event’s suppression attribute has been set to YES.
13 enabled Indicates the event’s suppression attribute has been set to NO.