Transducer Block
March 2006
5-41
Table 5-13. Transducer Block Parameter Definitions (Continued)
Label
PARAMETER_NAME
Description
Protect
Category
Initial ValueRangeMode
RO /
RW
Index
Number
Block Alarm
BLOCK_ALM
8
UNACKNOWLEDGED 8.1 RW ALL
0=Undefined
1=Acknowledged
2=Unacknowledged
0 NONE
Data Type: DS-72
Used to report the BLOCK_ERR
alarm to the host system
ALARM_STATE 8.2 RO N/A
0=Undefined
1=Clear−reported
2=Clear−not reported
3=Active−reported
4=Active−not reported
0 N/A
TIME_STAMP 8.3 RO N/A 0 N/A
SUBCODE 8.4 RO N/A
Subcode: Bit Number in
BLOCK_ERR
0 N/A
VALUE 8.5 RO N/A
Value of parameter at
alarm time for a single
alarm, 0 for multiple
alarms
0 N/A
Transducer Directory
TRANSDUCER_DIRECTORY
9 RO N/A 1,1 1,1 N/A
Data Type: Array [2] of UINT16
Not used
Transducer Type
TRANSDUCER_TYPE
10 RO 106 106 N/A
Data Type: Uint16
Identifies the type of the transducer.
Transducer Error
XD_ERROR or TDC_ERROR
11 RO
Valid Numbers: 0 = No
Error
0 N/A
Data Type: Uint8
Error code for the transducer block.
Collection Directory
COLLECTION_DIRECTORY
12 RO 1,1,1,1,1 1,1,1,1,1 N/A
Data Type: Array [5] of UINT32
Not used
FINAL_VALUE
13
Setpoint Status
STATUS
13.1 RW
MAN
OOS
N/A NONE
Data Type: DS-65
In Travel Control:
Setpoint for valve
travel in %, prior to
characterization.
In Pressure Control:
Setpoint for
implied valve travel as % or
pressure range, prior to
characterization.
FINAL_VALUE is not updated
unless the AO block is selected in
FEATURE_SELECT. For example,
FINAL_VALUE still has last value
written by AO channel 1 when DO
is in control.
Setpoint
VALUE
13.2 RW
MAN
OOS
−25 to 125 N/A NONE
Setpoint Range
FINAL_VALUE_RANGE
14
Data Type: DS-68
High and Low range limit values,
engineering units code, and
number of digits to the right of the
decimal place to be used to display
the Final Value.
EU_100 14.1 RO N/A 100 100 N/A
EU_0 14.2 RO N/A 0 0 N/A
UNITS_INDEX 14.3 RO N/A PERCENT 1342 N/A
DECIMAL 14.4 RO N/A 2 2 N/A
Tvl Cutoff Hi
FINAL_VALUE_CUTOFF_HI
15 RW
MAN
OOS
−25 to 125 99.5 SETUP
Data Type: Float
When the servo goes above this %
of span, the stem position goes to
the upper limit. Cutoffs are OFF
when Low is at −25% and high is at
+125%. Must be > low cutoff +
.625%.
Tvl Cutoff Lo
FINAL_VALUE_CUTOFF_LO
16 RW
MAN
OOS
−25 to 125 0.5 SETUP
Data Type: Float
When the servo goes below this %
of span, the stem position goes to
the lower limit. Cutoffs are OFF
when Low is at −25% and high is at
+125%. Must be < hi cutoff −
.625%.
−Continued−
5
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