Average Process - Honeywell 2MLF-AV8A User Manual

2. Specifications
2.4. Functions
*1) 8000 output after about 4 scans
*2) 8000 output after about 21 scans
*3) 8000 output after about 1422 scans (355.5ms for 1 channel Run)
If the filter process function is not used, then A/D conversion value is the output. Set the
filter value according to the degree of fluctuation of analog input data. If it fluctuates, set
a higher filter constant value.

Average process

Average process function is used in A/D conversion to handle abnormal analog input
signals. For example, noise, surges, and so on. This process is used to execute A/D
conversion of the channel for specified frequency or for specified time, and to save the
average of the accumulated sum in the memory. You can define the average processing
option and time/frequency value through user program or I/O parameters setting for
respective channels.
Average processing type is of time average and count average.
Time average processing
1. Setting range: 4 ~ 16000 (ms)
2. Average processing count within specified time is decided based on the number of
channels used.
Average processing
Example 1:
Channels used: 1, setting time: 16000ms
Average
Example 2:
Channels used: 8, setting time: 4ms
Average
42 Analog Input Module 2MLF-AV8A, AC8A User's Guide
count
=
(Number
processing count =
processing count
Honeywell
Setting Time
of Channels Used) x
16000 ms
= 64000
1 × . 0 25 ms
4 ms
= =
8 . 0 25 ms
×
( Conversion Speed)
times
2 times
R200
September 2010