Digital Inputs - Siemens simatic c7-621 Hardware Installation Manual

C7-621 Digital I/Os
6.1

Digital Inputs

Characteristics
The digital inputs have the following characteristics:
Terminals and
Figure 6-1 shows the terminals and block diagram of the digital inputs.
Block Diagram
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
Pin name
L+
M
NC
NC
Input DC 24V
Figure 6-1 Terminals and Block Diagram of the Digital Inputs
6-2
16 inputs, non-floating
Rated input voltage: 24V DC
Suitable, for example, for switches and 2-wire proximity switches
(BEROs)
Bottom view of the C7-621
Digital inputs
Block diagram of
an input
These shaded sections
are irrelevant for this
example.
C7-621 / C7-621 AS-i Control Systems
C79000-G7076-C621-01