Connection Scheme For The Digital I/O Interface - Siemens Simatic RF600 System Manual

5.6.1.5

Connection scheme for the digital I/O interface

Connection possibilities
You can connect the RF670R reader in different ways. In general, the outputs and inputs
should be connected as follows:
Output Outport (0), (1), (2), (3)
● Each output is rated for 0.5 A current and is electronically protected.
● Four digital outputs can be operated simultaneously with up to 0.5 A each (up to 1.5 A in
total).
● The outputs are optically isolated through optocouplers.
Input Inport (0), (1), (2), (3)
● The inputs are optically isolated through optocouplers.
● Level Low 0 ... 3 V; High 3,6 ... 24 V
● Sampling rate < 20 ms
The following diagrams illustrate various connection possibilities.
Voltage infeed through internal source (no electrical isolation)
Figure 5-32 Example circuit 1: Digital inputs
SIMATIC RF600
System Manual, xx/2014, J31069-D0171-U001-A15-7618
Readers
5.6 RF670R reader
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