LSIS XBF-AH04A

XGB Analog edition manual
2 - 10
2.7 Functions of Analog Input Module
Functions of XBF-AD04A conversion module are as described below.
Function Description
Channel Run/Stop
setting
(1) Specify Run/Stop of the channel to execute A/D conversion.
(2) If the unused channel is set to Stop, whole Run time can be reduced.
Input voltage/Current
range setting
(1) Specify analog input range to be used.
(2) Select range in parameter setting after select Voltage/Current switch.
Output data format
setting
(1) Specify digital output type.
(2) 4 output data formats are provided in this module.
A/D conversion
methods
(1) Sampling processing
Sampling process will be performed if A/D conversion type is not specified.
(2) Filter processing
Used to delay the sudden change of input value.
(3) Average processing
Outputs average A/D conversion value based on frequency or time.
There are three A/D conversion methods, sampling processing, filter processing and average processing.
Sampling Processing
Filter Processing
Average Processing
A/D Conversion Methods
Time Average
Count Average
(1) Sampling processing
It collects analog input sign through general A/D conversion processing at a specific interval so to
convert to digital. The time required for A/D conversion of analog input sign till saved on the memory
depends on the number of channels used.
(Processing time) = (Number of channels used) X (Conversion speed)
(Ex.) If the number of channels used is 3, its process time will be
3 x 1.5 ㎳ = 4.5 ㎳
Sampling is to calculate the sampling value of continuous analog sign at a specific interval.