Introducing the pci-dio24/s, Overview: pci-dio24/s features, Software features – Measurement Computing PCI-DIO24/S User Manual
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Chapter 1
Introducing the PCI-DIO24/S
Overview: PCI-DIO24/S features
This manual explains how to install, configure and use the PCI-DIO24/S digital I/O board. You can use this
board in a variety of digital applications to control logic devices such as switches, gauges, relays, pumps, and
sensors.
The PCI-DIO24/S is a 24-bit, TTL-compatible digital I/O board. Digital I/O lines are accessed through a 37-pin
connector. Digital I/O and interrupt pins are protected from electrostatic discharges of up to ±15 kV (air) and ±8
kV (contact).
An on-board, industry standard 82C55 programmable peripheral interface chip provides the 24 discrete digital
I/O lines in three eight-bit ports (Port A, Port B, and Port C) for each board. Port C can be further divided into
two four-bit ports (Port C-HI and Port C-LO). You can configure each port independently for either input or
output. The PCI-DIO24/S supports 5V or 3.3V TTL/CMOS I/O signaling.
The PCI-DIO24/S has open locations where you can install a pull-up or pull-down resistor for each port. All I/O
bits are set to input mode on power up and reset.
The PCI-DIO24/S board is completely plug-and-play, with no jumpers or switches to set. All board addresses
are set by your system's plug-and-play software.
Software features
For information on the features of InstaCal and the other software included with your PCI-DIO24/S, refer to the
Quick Start Guide that shipped with your device. The Quick Start Guide is also available in PDF at
Check
the latest software version or versions of the software
supported under less commonly used operating systems.