Siemens SIMATIC TI505 - Figure 2-7 Mechanical Switches

Installing the Module
2-9
High Speed Counter Encoder Module User Manual
Figure 2-7 shows an example of wiring mechanical switch inputs. (Note that
with mechanical switches, the contacts can “bounce” when switched.)
V
A+
A–
Module
OCI
Constant
current
load
V
A+
A–
Module
OCI
Constant
current load
Figure 2-7 Mechanical Switches