Beckhoff KL304 Series, Документация

Страница: 38 / 46

Access from the user program
KL304x, KL305x 38 Version: 4.0
• R36: Limit value 2 (Y_2)
If the process data are outside this threshold, the appropriate bits are set in the status byte.
• R37: Filter constant
[0x0000]
If the internal filter is activated via
R32.11 [
}
37] , you can choose between the following filter constants
in R37 (not possible with KL3044 and KL3054). In the standard setting, the corresponding conversion
time is 2.5 ms:
Note
Applies to all terminals from firmware version 3x.
This documentation applies to all terminals from firmware version 3x. The version informa-
tion can be found on the right-hand side of the terminal in the serial number: xxxx3xxx.
Example: 5298 3A 2A => the firmware version is 3A .
R37 Explanation
0x0000 2
nd
order FIR filter default value
0x0100 1
st
order IIR filter, cut-off frequency f
g
approx.1 kHz
The implemented IIR filters do not have any
notch behavior, i.e., they do not explicitly
suppress any frequency.
0x0200 1
st
order IIR filter, cut-off frequency f
g
approx.
100 Hz
0x0300 1
st
order IIR filter, cut-off frequency f
g
approx.
50 Hz
0x0400 1
st
order IIR filter, cut-off frequency f
g
approx.
20 Hz
0x0500 1
st
order IIR filter, cut-off frequency f
g
approx.
10 Hz
0x0600 1
st
order IIR filter, cut-off frequency f
g
approx.
5 Hz
0x0700 1
st
order IIR filter, cut-off frequency f
g
approx.
1 Hz
0x1000 50 Hz FIR filter
Averaging over 16 values and first notch 25 Hz
In contrast to the IIR filters, FIR filter have notch
behavior. The timer settings of the notch filter
are made via channel 0 of the terminal. This
means that the 50 Hz filter on channel 0 and the
60 Hz filter on channel 1 cannot be active
simultaneously.
0x2000 60 Hz FIR filter
Averaging over 16 values and first notch 20 Hz
Other
values No filter active