Digital I/O - National Instruments NI 6221 User Manual

Digital I/O

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M Series devices contain up to 32 lines of bidirectional DIO signals on
Port 0. In addition, M Series devices have up to 16 PFI signals that can
function as static DIO signals.
M Series devices support the following DIO features on Port 0:
• Up to 32 lines of DIO
• Direction and function of each terminal individually controllable
• Static digital input and output
• High-speed digital waveform generation
• High-speed digital waveform acquisition
• DI change detection trigger/interrupt
Figure 6-1 shows the circuitry of one DIO line. Each DIO line is similar.
The following sections provide information about the various parts of the
DIO circuit.
6-1
6
M Series User Manual