IMO iSmart V4 - Filter Function Block

Chapter 6 FBD Block Diagram Programming 183
Filter Function Block
FBD function can use 250 filter blocks in mode 1-4 (same as Ladder mode)
Filter Mode 1 (Analog filter)
Function instruction
When parameters setup finished, analog filter function will be enabled once enable coil status from 0 to 1. This
will start to do Ax analog value filter according to select sampling mode, the value after filter will be the
current value of F coil.
O
utput : Sampling number Sn, calculation value of Ax analog input
Function block
Enable input
→
Parameter setting
→
Software Filter Mode
(Mode 1)
The value will be updated by each scan cycle, it will use last 5 AD average value except maximum and minimum
one.
(Mode 2)
The value will be updated by each 5 scan cycles, it will use 5 time mode 1 value to do average.
(
Mode 3)
The value will be updated by each 25 scan cycles, it will use 5 time mode 2 value to do average of maximum
and minimum value.