ProSoft Technology PS-QS-1x10-0781 - Manual (Page 35)

FieldServer Configuration Manual Page 35 of 90
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Math
Task_Name , Scan_Interval , DAI1 , DOI1 , DAI2 , DOI2 , FN1 , DAO , DOO
Task_105 , 1 , DA_1 , 0 , DA_2 , 0 , Per , DA_5 , 0
This definition will result in the following operation:
DA_5[0] = DA_1[0] Per(%) DA_2[0]
Or
DA_5[0] = (DA_1[0] /DA_2[0]) * 100
i.e. if DA_1[0] = 10 and DA_2[0] = 20 then this means Da_1[0] is 50 % of Da_2[0] so DA_5[0] will contain 50.
5.3.4 Optional Parameters
Parameter Description
Legal
Values
Length*
Specifies the number of consecutive source Data Array values from all defined
source Data Arrays (egg DAI1 …DAI4) to be operated on and to store a result at
consecutive target locations, starting at the respective offsets. Any
positive
integer
Task_Name*
If a task name is specified, the move operation becomes a repetitive task on the
FieldServer and the data will be updated on a regular basis.
Any string
Scan_Interval*
Specifies the time interval at which the task will be repeated. A task name must
be specified if a scan interval is specified.
>0.1s, 2s
Truncate
Result* This function causes all intermediate and final results to be stored after
truncating. Refer to the example in Section 5.3.4.1
Yes, -
5.3.4.1 Truncate Result Example
Math
DAI1 , DAI2
, DAI3 , FN1 , FN2 , DAO , DOI1 , DOI2 , DOI3 , DOO , Length , Truncate_Results
DA_X , DA_17 , DA_17 , DIV , MULT , DA_Z , 0 , 0 , 0 , 0 , 1 , Yes
If DA_17[0] = 17 and DA_X[0]=100=x
DA_Z[0]=(x/17)*17 will be = 85 NOT 100