Siemens SIMATIC ET200SP Function Manual page 46

Circuit diagram example
4.4 TIA Portal configuration
Transfer the code sequences with the "TEACH" button:
As an alternative, the "TEACH" button can be used to provide an easy way of transferring
taught code sequences. The "TEACH" button can be used, for example, to transfer code
sequences of modules replaced during operation. However, it is also suitable for initial
commissioning.
The "TEACH" pushbutton is connected to the terminals "TEACH1" and "TEACH2" (terminals 1
and 2) of the base unit of the F-CM AS-i Safety ST module.
Press the "TEACH" button for at least 3 s. This action causes all currently taught code
sequences that are unique and consistent to be transferred to the non-volatile memory. Next,
the input data of the safe AS-i input slaves is evaluated, allowing reintegration in the safety
program.
Further information on the topic of code sequences can be found in the "T 200SP fail-safe
module F-CM AS-i Safety ST
(https://support.industry.siemens.com/cs/ww/de/view/90265988)" Manual in the "Code
sequences" section.
46
Safety engineering with AS‑Interface in the SIMATIC ET 200SP, including typical circuit diagram
Function Manual, 08/2020, A5E44991382002A/RS-AB/002