C8-2
IM 34M06H62-02E 2nd Edition : June 2008-00
The module provides four alarms for each loop. Each alarm can be disabled or its
alarm type can be selected from a list of available alarm types.
In addition, four sets of alarm preset values can be defined for each loop. Each set
of alarm preset values consists of four preset values for the four alarms of a loop.
You can specify which set of alarm preset values is to be used during operation
using the SP Number Selection (SPNO) parameter. You can also modify the alarm
preset value of an alarm during operation.
Figure C8.1 Block Diagram of Alarm Functions
Alarms 3 and 4 have no associated input relay. Their statuses are indicated by
corresponding bits of ALM.STUS.
".m" denotes the SPNO number,
ranging from 1 to 4.
".n" denotes a loop number,
ranging from 1 to 4.
Alarm processing
1
PV.n
Alarm processing
2
Alarm processing
3
Alarm processing
4
ALM.STUS.nALM2.R.nALM1.R.n
Input register
I/O register
Input relay
AL1.n
HY1.n
m.A1.n
DLY1.n
AL2.n
HY2.n
m.A2.n
DLY2.n
AL3.n
HY3.n
m.A3.n
DLY3.n
AL4.n
HY4.n
m.A4.n
DLY4.n
CSP.n
CAUTION
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