Manual 104-QUAD-8
5
Chapter 1: Introduction
Features
Up to eight quadrature encoders may be connected
Input conditioning per channel allows a variety of encoder types to be used
Interrupt for an encoder index is program enabled per channel
Outputs to computer can include count, direction of movement
24 bit counters for each input channel
+5V supply available to the user
Applications
Automatic Test Systems
Laboratory Automation
Robotics
Machine Control
Security Systems
Energy Management
Functional Description
The card is a general purpose Quadrature Encoder Counter/Interface board. It is provided in the
popular PC/104 format and conditions and monitors the outputs of 8 encoders.
Available functions include anything that can be programmed into the versatile LSI/CSI LS7267
integrated circuit. Core functions handled by the LS7267 includes direction and total count. By
performing these functions on-board, it frees the computer for higher level applications.
The ability to provide an interrupt for the index frees the computer from the necessity of constantly
reading the position of an encoder.
Interrupts are directed to levels #2 through #7, #10 through #12, and #15 by jumper installation.
The card is designed for industrial applications. Each input line is buffered and capable of accepting
inputs up to 6 volts. A +5 Volt source is available to provide power for many encoder types.
The conditioned inputs are connected to associated LSI/CSI LS7267 integrated circuits. These circuits
are the heart of the card
’s operation. We strongly recommend reviewing the manufacturer’s data sheet
for detailed information.
The card occupies 32 bytes of I/O address space. The base address is selectable via jumpers
anywhere within the range of 100-3E0 hex. An illustrated setup program is provided with the card.
Interactive displays show locations and proper settings of jumpers to set up board address and interrupt
levels.
