Instruction Manual

Logic Functions - Book 1
SYSTEM EVENT BLOCK
3-41
54
Global Acknowledge Input (GLBINP) ....................................................................... C – R
55
Diagnostic Acknowledge Input (DGINP).................................................................. C – R
56
Process Alarm Acknowledge Input (PAINP)............................................................ C – R
57
Notification/Requests Message Acknowledge Input (NMINP)............................... C – R
These acknowledge inputs are edge triggered so that a value of 0 (FALSE) followed by a
value of 1 (TRUE) acknowledges the alarm. Global acknowledge indicates all
diagnostics, process alarms and notification/requests are acknowledged.
None No acknowledgement input connected.
LSP Discrete variable used to acknowledge all alarms and reset the
input (not operator writable).
3.4.3 Typical Block Connections for System Event Block
Typical softwiring block structures used on softwiring diagrams are shown in Figure 3-10.
Operator write access to
acknowledge alarm
Logical Source Pointer from
another function block
Operator write access to
change reporting conditions
SE1
Global Acknowledge Command
Process Alarm Ack. Input
Queue Entry ID
Report Informational Events
Report Block State Changes
Report PA Events
Operator indication
of condition (Y/N)
Count output to CL block
QID
RPTINF
RPTSTA
RPTPA
Figure 3-10. System Event Block, Typical Connections
3.4.4 System Event Block Events
The event codes (and their suggested text messages) for the system event block are
given below. See database attributes for additional information.
Informational Event Codes and Descriptions
4 ALL DIAG, PA AND NM GLOBALLY ACKED.
5 ALL DIAGNOSTICS GLOBALLY ACKED.
6 ALL PROCESS ALARMS GLOBALLY ACKED.
7 ALL NOTIF/REQ MSGS GLOBALLY ACKED.
8 ALL GROUP DIAGNOSTICS SUPPRESSED
9 ALL GROUP DIAGNOSTICS ENABLED
10 GROUP 1 DIAGNOSTICS SUPPRESSED
11 GROUP 1 DIAGNOSTICS ENABLED
12 GROUP 2 DIAGNOSTICS SUPPRESSED
13 GROUP 2 DIAGNOSTICS ENABLED
14 GROUP 3 DIAGNOSTICS SUPPRESSED
15 GROUP 3 DIAGNOSTICS ENABLED
16 GROUP 4 DIAGNOSTICS SUPPRESSED
17 GROUP 4 DIAGNOSTICS ENABLED
18 GROUP 5 DIAGNOSTICS SUPPRESSED