<Appendix 3. Arithmetic (Ar) Block>
265
IM 01E21A02-03EN
Relative
Index Parameter Name
Write
mode
Valid
Range
Default
Value
Description / Remarks
29
AR IT H_TY PE
1 to 10
0x01
Computation algorithm identification no.
Value
Selection Name
Description
1
Flow compensation,
linear
Flow rate
compensation
(linear)
2
Flow compensation,
square root
Flow rate
compensation
(square root)
3
Flow compensation,
approximate
Flow rate
compensation
(approximate
formula)
4
BTU flow (*)
Calorie
calculation
5
Traditional Multiply
Divide
Multiplication
and division
6
Average
Average
calculation
7
Traditional summer
Summation
8
Fourth order
Polynomial, Type1
4th-order
(auxiliary input)
polynomial
9
HTG level
compensation (*)
HTG level
compensation
10
Fourth order
Polynomial, Type2
4th-order
(main input)
polynomial
computation
* BTU stands for British thermal unit.
HTG stands for hydrostatic tank gauging.
30
BAL_TIME
More
than 0
0
Time taken to return to the set value
31
BIAS
0
Bias value used to calculate the output
32
GAIN
1
Gain value used to calculate the output
33
OUT_HI_LIM
+INF
Maximum output value
34
OUT_LO_LIM
-INF
Minimum output value
35
UPDATE_EVT
Indicates contents of the event when an update
event (a change to the setpoint) occurs.
36
BLOCK_ALM
Indicates contents of the alarm when a block alarm
occurs.