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Figure 2.4: Digital Input Connector Pin Assignments
Table 2.4: Digital Input Connector Signal Description
Signal Name
DI <0...3>
COM
2.5.2 Isolated Inputs
Each of isolated digital input channels accepts 0 ~ 50 VDC voltage inputs,
and accepts bi-directional input. The voltage range is -3 ~ 3 VDC for logic
0 (low), -50 ~ -10 VDC and 10 ~ 50 VDC for logic 1 (high). It means that
you can apply positive or negative voltage to an isolated input pin (Vin).
All channels share one common pin (COM). Figure 2.5 shows how to con-
nect an external input source to one of the UNO-3072 isolated input chan-
nels.
Please note that DI0 and DI2 may be configured as gate control pins of
Counter 0 and Counter 1; While DI1 and DI3 may be configured as input
pins of Counter 0 and Counter 1. Please refer to section 2.7 for details.
Note:
Refer to Appendix A.3 Table A.6 for command of DI
UNO-3072 User Manual
Reference
Direction
COM
Input
-
-
18
Description
Isolated DI signals
DI, DO isolated
ground
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