Siemens SIDOOR AT40 System Manual page 105

Image 6-17 Interfacing safe (PLd) digital door control (OPEN/CLOSE) with emergency stop (encoder type 2)
Door commands
The door command with the highest priority is STOP → ramp stop.
The status following the ramp stop can be defined using the "special" door command
expansion bit as either "source voltage brake activated" or "coasting down" (deenergized or
no current).
AT40, ATD400V, ATD400K, ATD4xxW, ATD400S, ATE250S, ATD400T
System Manual, 06/2016, A2B00096162-AN
Controllers
6.3 Safety concept ATD4xxW
105