X86 Open Platform
·
User Manual
29
Chapter 7 I/O Wiring
7.1 I/O Input Wiring
I/O interface input wiring method is shown below, and its input voltage ranges from 5 VDC
to 30 VDC.
Figure 7-1
I/O Input Wiring
If the input device is NPN signal (suspended or power negative), IN_COM should be
connected with input device power positive, and signal line with corresponding input
interface.
Signal Line
OPTO IN
IN _ COM
Power +
Power Ground
NPN
Signal Ground
_
Figure 7-2
Connecting to NPN Device
If the input device is PNP signal (suspended or power positive), IN_COM should be
connected with input device power negative, and signal line with corresponding input
interface.