8 filter configuration and number of samples i, 9setpoint 1 and 2 configuration \(“sp cnf, Setpoint 1 and 2 configuration (“sp cnf”) – Cooper Instruments & Systems DFI INFINITY Digital Force Indicator/Controller User Manual
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EXAMPLE: The computer wants to set meter #15 hex to center the decimal point and count-by-10. It transmits
“*15P0C43
These data are put into EEPROM by using “W”, and can be read from the RAM or EEPROM by “G” or “R”: For
example, commanding “*15G0C
configuration when a command-echo is programmed.
10.8 Filter Configuration And Number Of Samples In The Average (“FIL.CNF”, “FIL TI”)
This “0E” command suffix uses just one byte, MSN for filter type and where used, LSN for the (maximum)
number of samples to be averaged into the filtered value.
The choice of ABC (adaptive filter, # samples in the average drops if a signal motion is detected), fixed filter (#
samples does not change), or no filter for the display and the analog output (option) are shown in Tables 10.16
and 10.17.
“x” is used to show either “1” or “0”.
Table 10.16. Filter Time Constant (“FIL TI”) bits 3, 2, 1 and 0
BIT NUMBER
3 2 1 0
(MAXIMUM)
# SAMPLES/AVERAGE
0 0 0 0 1
(unfiltered)
0 0 0 1 2
0 0 1 0 4
0 0 1 1 8
0 1 0 0 16
0 1 0 1 32
0 1 1 0 64
0 1 1 1 128
Table 10.17. Filter Configuration (“FIL.CNF”) Bits 7, 6, 5, and 4
BIT NUMBER
7 6 5 4
SELECTS
x
x x
0
ABC filter type
x
x x
1
Normal filter type
x
x 0
x
Reading value used on display
x
x 1
x
Filtered value used on display
0
0 x
x
Unfiltered value to Analog output
0
1 x
x
Filtered value to Analog output
1
0 x
x
Peak value to Analog output
1
1 x
x
Valley value to Analog output
EXAMPLE: The computer requests the EEPROM filter values from meter #15 hex: “*15R0E
meter response (with echo): “15R0E67
(ABC) filter on both outputs with a maximum number of samples in the average (128).
10.9 Setpoint 1 and 2 Configuration (“SP CNF”)
This “10” command suffix encodes the operating modes selected for these two setpoint sin one byte (two HEX-
ASCII characters):
CF 125 INFINITY SC GUIDE
41
M1519/N/0605