Upgraded 48-bit digital I/O card

April 2006 Industrial Computer Hardware

The PCI-1751 48-bit digital I/O and counter card has been upgraded to the PCI-1751U, a 48-bit TTL DI/O card with timer/counter interrupt capability, surge protection, and universal PCI interface for use with 3,3 V and 5 V signals.

PCI-1751U is fully compliant with the PCI-1751, but users of the card will see two major improvements, namely the universal PCI interface and the convenient BoardID switch. The universal PCI interface means installations in various applications are easier as it supports both the old 5 V and the new power-saving 3,3 V interfaces.

The BoardID switch takes plug-and-play to the next level. While plug-and-play makes installation easier when a PCI card is installed in a PC, plug-and-play cannot deal with two identical cards in the same PC. The PC is simply unable to differentiate between the two cards. The BoardID switch gives each card a unique identification so that the cards can be recognised as different cards by the software. There is no need to open the chassis.

Like its predecessor, PCI-1751U has 48 bits that are divided into six 8-bit I/O ports, and each port can be configured as input or output by software. Also included is an event counter and two 16-bit timers that can be cascaded to become a 32-bit timer.

If the system is hot reset, PCI-1751U can either retain the last I/O port setting and output value, or reset to its default configuration, depending on jumper settings. This function protects the system from performing wrong operations during unexpected system resets. Additionally, PCI-1751U supports both dry and wet contacts so that it can easily interface with other devices. Drivers have been prepared for Microsoft Windows XP/2000/98, ActiveDAQ and LabVIEW.

For more information contact Elton Prytz, ProMicro, 011 706 7913, [email protected], www.promicro.co.za

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