Simatic Rf600 - Siemens SIMATIC RF600 System Manual

input (DI 0 ... 3)
● The inputs are optically isolated through optocouplers.
● Level
– Low: 0 ... 7 V
– High: 15 ... 24 V
The following diagrams illustrate various connection possibilities.
Note
Minimum time between changes
Note that changes on the DI/DQ interface that are not applied for at least 1.5 seconds are
not detected by the reader.
Voltage infeed from internal source (no electrical isolation)
Figure 5-34 Circuit example 1: Digital inputs
Alternative connection possibilities:
● Pin 2 (VCC) to Pin 9 DI Common
● Pin 1 GND to busbar inputs

SIMATIC RF600

System Manual, 06/2019, J31069-D0171-U001-A22-7618
Readers
5.6 SIMATIC RF685R
199