Beckhoff KL304 Series Documentation

Access from the user program
KL304x, KL305x38 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: 52983A2A => 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

Beckhoff KL304 Series Specifications

General

Brand	Beckhoff
Model	KL304 Series
Category	Touch terminals
Language	English