Figure 4-6. Digital I/O Connections - National Instruments PCI-6110E/6111E User Manual

Chapter 4 Signal Connections
Caution:
!
LED
+5 V
PCI-6110E/6111E User Manual
Exceeding the maximum input voltage ratings, which are listed in
Table 4-2, can damage the 611X E board and the computer. National
Instruments is liable for any damages resulting from such signal
NOT
connections.
Figure 4-6 shows signal connections for three typical digital I/O
applications.
+5 V
TTL Signal
Switch
I/O Connector
Figure 4-6 shows DIO<0..3> configured for digital input and
DIO<4..7> configured for digital output. Digital input applications
include receiving TTL signals and sensing external device states such
as the switch state shown in Figure 4-6. Digital output applications
include sending TTL signals and driving external devices such as the
LED shown in Figure 4-6.
DGND
611 X E Board

Figure 4-6. Digital I/O Connections

4-14
DIO<4..7>
DIO<0..3>
© National Instruments Corporation