ProSoft Technology PS-QS-1x10-0781 - Manual (Page 33)

FieldServer Configuration Manual Page 33 of 90
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5.3 Mathematical functions
Mathematical functions implement subset of math functions of Data Array values. Some single-operator functions
can be incorporated into Moves, but Multi-operator/operand functions must be defined in the Math block. The
length of the move defines the number of input operands.
The following table shows the Mathematics functions and their text representation:
Operator (csv
text) Mathematics
Operator Notes
ADD +
All operands are combined and a single output is produced for n(=length)
of input values SUB -
MULT *
DIV /
GTE >=
Each move works as follows:
value_of_(DA_SDA1 offset0) MathOperator value_of_(DA_SDA1 offset1)
Result is stored in DA_TDA offset.
e.g. (for GTE)
value1 = DA_SDA1[0] ; value2 = DA_SDA1[1]
if value1 GTE value2, 1 will be stored at DA_TDA[10] else 0 will be stored.
The length parameter is always 1 as only one operation can be performed
per move
LTE <=
GT >
LT <
EQ =
NE !=
SQ Square n outputs are produced for n (=length) values stored in sequence starting
at the Target Offset.
SQRT Square root
PER %
For 2 values A and B.result of A PER B will be (A/B)*100 which will be
stored in the target Data Array..
5.3.1 Math Function as a Moves Function
Example
Moves
Function , Source_Data_Array , Source_Offset , Target_Data_Array , Target_Offset , Length
ADD
, DA_SDA1 , 0 , DA_TDA , 0 , 10
SUB , DA_SDA1 , 0 , DA_TDA , 10 , 10
MULT , DA_SDA1 , 0 , DA_TDA , 20 , 4
DIV , DA_SDA1 , 10 , DA_TDA , 30 , 3
SQ , DA_SDA1 , 0 , DA_TDA , 100 , 4
SQRT , DA_SDA1 , 10 , DA_TDA , 140 , 2
GTE , DA_SDA1 , 0 , DA_TDA , 10 , 1
LTE , DA_SDA1 , 0 , DA_TDA , 11 , 1
GT , DA_SDA1 , 0 , DA_TDA , 12 , 1
LT , DA_SDA1 , 0 , DA_TDA , 13 , 1
PER , DA_SDA1 , 0 , DA_TDA , 14 , 1
EQ , DA_SDA1 , 0 , DA_TDA , 15 , 1
NE , DA_SDA1 , 0 , DA_TDA , 16 , 1