Advantech UNO-3272G Series User Manual page 28

Table 2.14: DI/ DO Pin Assignments
6
7
8
9
10
Table 2.15: DI/DO switch
1
2
Default: Dry contact
Isolated Digital Input Each of the 4 isolated digital input channels accept voltages
from 0 to 30 V. Every four input channels share one external common. (Pin1-4 use
PCOM and DGND, Pin 6-9 use DGND) The following figure shows how to connect an
external input source to the card's isolated inputs.
UNO-3272G User Manual
DI0 Isolated digital input
DI1 Isolated digital input
DI2 Isolated digital input
DI3 Isolated digital input
DGND External common of IDI0~3
Dry Contact
OFF
ON
Figure 2.14 Isolated DI Dry connection
18
Wet Contact
ON
OFF