Siemens MPP 464 IE H Equipment Manual page 57

1) Signal to PLC: triggers time monitoring. If the signal level is still "Low" or "Open" after the monitoring time has elapsed
(max. 5 min), the PLC must trigger an EMERGENCY OFF.
Figure 6-6 Handheld unit connection HT 8
Machine Pushbutton Panel: MPP 464 IE H
Equipment Manual, 03/2021, A5E50810237B AA
Connecting
6.5 Emergency stop override S11
57