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Chapter 3 Operation
3.1 Overview
This chapter describes the operating characteristics of the PCM-3724.
The driver software bundled with this card allows a user to access all of
the card's functions without register level programming. Please see the
User's Manual included on the driver CD-ROM for more information.
For users who prefer to implement their own bit-level
programming to drive the card's functions, information useful for making
such a program is included in this chapter.
3.2 Digital I/O Ports
3.2.1 Introduction
The PCM-3724 modules simulate MODE 0 of an Intel 8255 programma-
ble peripheral interface (PPI) chip, with Port C undividable. The module
is pin compatible with most industrial solid state I/O racks and modules,
such as those manufactured by OPTO-22, Potter Brumfield, Gordos, etc.
The PCM-3724's two 50-pin male IDC connectors interface with directly
to OPTO-22 racks. The PCM-3724 offers two I/O lines (PC00 and PC10)
to generate hardware interrupts.
PCM-3724 User Manual
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