Siemens SIMATIC HMI Series Operating Instructions Manual page 251

Connection box advanced
The figure below shows the wiring of the emergency stop/stop button in the connection box
advanced.
The stop bypass only works if the connection box is supplied with power.
Mobile Panels 2nd Generation
Operating Instructions, 09/2018, A5E33876626-AC
11.11 Interfaces of the connection box standard and connection box advanced
Technical specifications
251