Siemens Simatic ET 200SP Equipment Manual page 48

Parameters/address space
4.6 Explanation of parameters
1 The actual speed exceeds the configured speed limit during the "n+2" update interval. Due to the averaging of the
measured value, the calculated speed never exceeds the speed limit so no safe speed event is issued by the module.
Larger update times effectively filter out short speed limit violations. Therefore, if the application needs to detect
momentary speed limit violations, a shorter update time should be configured.
Speed limit
Specifies the maximum acceptable speed in velocity units for the SLS function only when
velocity is selected.
Note
The speed limit selection is disabled if "Safety Function - Limited Speed" is disabled.
Reaction to CPU STOP
Specifies whether the channel continues to count pulses while the F-CPU is in STOP mode.
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ET 200SP F-TM Count 1x1Vpp sin/cos HF (6ES7136-6CB00-0CA0)
Equipment Manual, V1.0, 01/2021, A5E47073911-AA