ProSoft Technology PS-QS-1x10-0781 - Manual (Page 34)

FieldServer Configuration Manual Page 34 of 90
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com
Tel: (408) 262-2299 Fax: (408) 262-2269 Toll Free: (888) 509-1970 email: [email protected]
5.3.2 Standalone Math
The Math definition allows up to four source data locations, up to four Math operations, and one output data location. Operands are kept on a “stack” and are
operated on in the sequence in which they have been defined. Math functions consume 1 or 2 stack variables as inputs (2 for ADD, SUB, MULT, DIV, GTE, LTE,
GT, LT, NE, EQ and 1 for SQRT, SQ) and leave the output on the stack, ready to be used by the next defined Math operation. The output of each operation
becomes an input to the next operation, along with the next defined operand.
Note: Output of GTE, LTE, GT, LT, EQ, NE, AND, OR, and NOT is binary either 1 or 0.
AND, OR, and NOT work the same way as Logic.
The following fields are specific to the Math & Logic definition:
DAI1...DAI4 : input Data Arrays 1 through 4
DOI1...DOI4 : input Data Array offsets 1 through 4
DAO:
output Data Array
DOO: output Data Array offset
FN1...FN4: logic functions 1....4 (permitted values: ADD, SUB, MULT, DIV, GTE, LTE, GT, LT, EQ, NE, SQRT, SQ, AND , OR, NOT, - (no setting))
5.3.3 Math Usage Example:
Math
Task_Name , Scan_Interval , DAI1 , DOI1 , DAI2 , DOI2 , DAI3 , DOI3 , DAI4 , DOI4 , FN1 , FN2 , FN3 , FN4 , DAO , DOO
Task_105 , 1 , DA_1 , 0 , DA_2 , 1 , DA_3 , 2 , DA_4 , 3 , ADD , SUB , MULT , SQRT , DA_5 , 21
This definition will result in the following operation:
DA_5[21] = Sqrt( ( ( DA_1[0] + DA_2[1] ) - DA_3[2] ) * DA_4[3] )
Math
Task_Name , Scan_Interval , DAI1 , DOI1 , DAI2 , DOI2 , DAI3 , DOI3 , DAI4 , DOI4 , FN1 , FN2 , FN3 , FN4 , DAO , DOO
Task_105,
1, DA_1, 0, DA_2, 1, DA_3, 2, DA_4, 3, Div, Sub, Mult, Sq, DA_5, 21
This definition will result in the following operation:
DA_5[21] = ( ( ( DA_1[0] / DA_2[1] ) - DA_3[2] ) * DA_4[3] )
2