Siemens SCALANCE S615 - Page 54

Connecting up
5.4 Digital input/output
SCALANCE S615
54 Operating Instructions, 10/2022, C79000-G8976-C389-07
Digital input
The 2-pin terminal block has the following assignment:
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