ISEL Function Block
December 2009
4-113
Table 4-39. Input Selector Function Block Parameter Definitions (Continued)
Label
PARAMETER_NAME
Description
Initial
Value
Range
Block
Mode
RO /
RW
Index
Number
High Alarm
HI_ALM
46
Data Type: DS-71
The high alarm data, which includes a value of the
alarm, a timestamp of occurrence, and the state of
the alarm.
UNACKNOWLEDGED 46.1 RW N/A
0=Undefined
1=Acknowledged
2=
Unacknowledged
0
ALARM_STATE 46.2 RO N/A
0=Undefined
1=Clear reported
2=Clear not reported
3=Active reported
4=Active not
reported
0
TIME_STAMP 46.3 RO N/A 0
SUBCODE 46.4 RO N/A 0
VALUE 46.5 RO N/A 0
Low Alarm
LO_ALM
47
Data Type: DS-71
The low alarm data, which includes a value of the
alarm, a timestamp of occurrence, and the state of
the alarm.
UNACKNOWLEDGED 47.1 RW N/A
0=Undefined
1=Acknowledged
2=
Unacknowledged
0
ALARM_STATE 47.2 RO N/A
0=Undefined
1=Clear reported
2=Clear not reported
3=Active reported
4=Active not
reported
0
TIME_STAMP 47.3 RO N/A 0
SUBCODE 47.4 RO N/A 0
VALUE 47.5 RO N/A 0
Low Low Alarm
LO_LO_ALM
48
Data Type: DS-71
The low low alarm data, which includes a value of the
alarm, a timestamp of occurrence, and the state of
the alarm.
UNACKNOWLEDGED 48.1 RW N/A
0=Undefined
1=Acknowledged
2=
Unacknowledged
0
ALARM_STATE 48.2 RO N/A
0=Undefined
1=Clear reported
2=Clear not reported
3=Active reported
4=Active not
reported
0
TIME_STAMP 48.3 RO N/A 0
SUBCODE 48.4 RO N/A 0
VALUE 48.5 RO N/A 0
Output Discrete
OUT_D
49
MAN
OOS
Status
Data Type: DS-66
Discrete output to indicate a selected alarm value
Value
0, 1
Alarm Select
ALM_SEL
50 ALL
Status
Data Type: Bit String
Used to select the process alarm conditions that will
cause the OUT_D parameter to be set.
1: Hi Hi
2: Hi
3: Lo Lo
4: Lo
All bits:0
4