Siemens Simatic ET 200SP Equipment Manual page 45

Standstill tolerance
Specifies the acceptable standstill tolerance allowed for the SOS function measured in counts.
Note
The standstill tolerance selection is disabled if "Safety Function - Safe Stop" is disabled.
Safety Function - Safe Direction
Enables safe direction (SDI) monitoring.
Monitoring tolerance
Specifies the acceptable tolerance in the unsafe direction for the SDI function measured in
counts.
Note
The monitoring tolerance selection is disabled if "Safety Function - Safe Direction" is disabled.
ET 200SP F-TM Count 1x1Vpp sin/cos HF (6ES7136-6CB00-0CA0)
Equipment Manual, V1.0, 01/2021, A5E47073911-AA
Parameters/address space
4.6 Explanation of parameters
43