Siemens SIMATIC ET 200SP Manual page 64

Signal evaluation
With the parameter assignment of the signal evaluation, you specify which edges of the
signals are counted.
You can select from the following options:
Signal evaluation
Single
Double
Quadruple
The parameter can be assigned with the following signal types:
● Incremental encoder (A, B phase-shifted)
● Incremental encoder (A, B, N)
Filter frequency
By configuring the filter frequency, you suppress interferences at the counting inputs A, B
and N.
The selected filter frequency is based on a pulse/break ratio of between around 40:60 and
around 60:40. This results in a specific minimum pulse/break time. Signal changes with a
duration shorter than the minimum pulse/break time are suppressed.
You can select from the following filter frequencies:
Filter frequency
100 Hz
200 Hz
500 Hz
1 kHz
2 kHz
5 kHz
10 kHz
20 kHz
50 kHz
100 kHz
200 kHz
TM Count 1x24V (6ES7138‑6AA01‑0BA0) technology module
Manual, 07/2019, A5E33002339-AD
Meaning
The edges of signal A are evaluated during a low level of signal B.
Each edge of signal A is evaluated.
Each edge of signals A and B is evaluated.
Minimum pulse/break time
4.0 ms
2.0 ms
800 µs
400 µs
200 µs
80 µs
40 µs
20 µs
8.0 µs
4.0 µs
2.0 µs
Configuring/address space
4.4 Fast Mode
63