Siemens SIMATIC NET SCALANCE S615 - Grounding

Digital input
The 2-pin terminal block has the following assignment:
9
9
',
',
Contact Assignment
+DI Input
-DI Ground
If there is an adequate switching voltage at the digital input, the digital input is active and
the "DI" LED is lit.
The voltage applied to the "DI" contact is converted to a digital status by the device as follows:
Voltage Status
-30 to +3 VDC 0
+13 to +30 VDC 1
Connecting up
5.4Digital input/output
SCALANCE S615
52 Operating Instructions, 05/2023, C79000-G8976-C389-08