Siemens SIRIUS 3RK3 Equipment Manual page 223

Note
Setting/resetting of a safety-related AS-i output
If a safety-related AS-i output is set and reset using the "Output cell" cell function, only the first
of the four fail-safe signals can be used.
You can use output function "AS‑i1..4F‑DO" to interconnect multiple outputs of a safety-related
AS-i output or auxiliary signals (AUX) and to monitor the switching status.
Another method of interconnecting the signals in the logic is demonstrated below:
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Figure 6-29
SIRIUS 3RK3 Modular Safety System
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006
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Controlling safety-related AS‑i outputs using function element AS‑i 1..4F‑DO
6.5 Connecting to the AS-i master via AS-Interface
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Operation
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