Connecting digital i/o signals, Figure 4-7. digital i/o connections, Connecting digital i/o signals -15 – National Instruments NI 6115/6120 User Manual
Page 52
Chapter 4
Connecting Signals
© National Instruments Corporation
4-15
Connecting Digital I/O Signals
The DIO signals are DIO<0..7> and DGND. DIO<0..7> are the signals
making up the DIO port, and DGND is the ground-reference signal for the
DIO port. You can program groups of individual lines to be inputs or
outputs.
Caution
Exceeding the maximum input voltage ratings, which are listed in Table 4-3, can
damage the NI 6115/6120 and the computer. NI is not liable for any damage resulting from
such signal connections.
Figure 4-7 shows signal connections for three typical DIO applications.
Figure 4-7. Digital I/O Connections
+5 V
LED
TTL Signal
+5 V
Switch
I/O Connector
DGND
NI 6115/6120
DIO<0..3>
DIO<4..7>