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The Transducer Block
3.8 AI_TRANSDUCER Block (PA Slot 3) Parameter List
SITRANS TH400 PROFIBUS® PA
30
Configuration Manual, 02/2007, A5E01039143-01
3.8.4
Output conditioning parameters
Parameter
Rel.
Index
PA
Description
Type
Store Size
byte
RO /
R/W Min. Max. Default
SENSOR_MEAS_TYPE
12
Mathematical function to calculate PRIMARY_VALUE (PV).
Defined codes:
0:
PV = SV_1
1:
PV = SV_2
128:
PV = SV_1 - SV_2 Difference
129:
PV = SV_2 - SV_1 Difference
192:
PV = ½ * (SV_1 + SV_2) Average
193:
PV = ½ * (SV_1 + SV_2) Average, but SV_1 or
SV_2 if the other is wrong (input_fault_x
≠
0)
220:
PV = SV_1, SV_2 not available. Used for single
sensor applications. If selected, Sensor 2 will
not be measured. All parameters exclusively
related to Sensor 2 are not available, and no
alarms will be generated for Sensor 2.
221:
PV = SV_1, but SV_2 if SV_1 is wrong
(INPUT_FAULT_1
≠
0)
222:
PV = SV_2, but SV_1 if SV_2 is wrong
(INPUT_FAULT_2
≠
0)
Unsigned
8
SRC 1
R/W
220
BIAS_1
19
Bias that can be algebraically added to process value of sensor
1, SV1.
The unit of BIAS_1 is the PRIMARY_VALUE_UNIT.
Float
SRC 4
R/W
0
BIAS_2
20
Bias that can be algebraically added to process value of sensor
2, SV2.
The unit of BIAS_2 is the PRIMARY_VALUE_UNIT.
Float
SRC 4
R/W
0
MAX_SENSOR_VALUE_1 29
Holds the maximum SECONDARY_VALUE_1. The unit is
defined in SECONDARY_VALUE_1.
Float
N
4
R/W
0
MIN_SENSOR_VALUE_1
30
Holds the minimum SECONDARY_VALUE_1. The unit is defined
in SECONDARY_VALUE_1.
Float
N
4
R/W
0
MAX_SENSOR_VALUE_2 31
See. MAX_SENSOR_VALUE_1
Float
N
4
R/W
0
MIN_SENSOR_VALUE_2
32
See. MIN_SENSOR_VALUE_1
Float
N
4
R/W
0