Introduction
Applications
Features
Specifications
Ordering Information
Introduction
The PCL-833 is a three-axis quadrature encoder and counter add-on card
for the IBM PC/AT and compatibles (ISA bus). This card lets your PC
perform position monitoring for motion control systems.
Encoder Interface
Each input includes a decoding circuit for incremental
quadrature encoding. Inputs accept either single-ended or differential
signals. Quadrature input works with or without an index, allowing
linear or rotary encoder feedback.
Counters
The PCL-833 has three independent 24-bit counters. The maximum
quadrature input rate is 1.0 MHz, and the maximum input rate in counter
mode is 2.4 MHz. You can individually configure each counter for
quadrature decoding, pulse/direction counting or up/down counting.
Digital Input and Interrupts
The PCL-833 provides five digital input channels. Each channel
accepts digital input as an index input for a rotary encoder or as a
home sensor input for a linear encoder. The card can generate an
interrupt to the system based on a signal from its digital inputs,
overflow/underflow of its counters, or on a programmed time interval. It
can repeatedly generate interrupts at any time interval you specify,
from 0.1 msec. to 255 sec. These interrupts let you precisely monitor
the speed of a control system.
Applications
- Position Monitoring
- Control 24/48 bit
- Up/Down Counters
Features
- 1.0 MHz max. quadrature input rate
- 24-bit counter (can cascade up to
48-bits)
- Optically isolated up to 2500 V
- 4-stage digital filter
- 2.4 MHz max. input pulse rate
- Pulse / direction and up / down
counter
- Digital input with interrupt for
each axis
- Programmable-time-interval interrupt
- Half-size AT-bus card
Specifications
Encoder Input
- Number of Axes: 3
independent axes
- Max. quadrature input
frequency: 1.0 MHz
- Max. input pulse frequency:
2.4 MHz
- Counts per encoder cycle:
x1, x2, x4 (S/W selectable)
- Encoder type:
Single-ended or differential Counter size: 24 bits, easily daisychains
for up to 48 bits
- Counter modes:
Quadrature, up/down, count/direction (S/W selectable)
- Digital filter: 4
stage Sample clock frequency: 8, 4 or 2 MHz (S/W selectable)
- Input isolation:
2500 VRMS using optical isolators
Digital Input
- Number of channels:
Five differential, with interrupt
- Input isolation:
2500 VRMS using optical isolators
Programmable Interrupt
Controller
- 1 Hz, 10 Hz, 1 KHz or 10 KHz time
base (S/W selected) with a programmable multiplier of 1, 2, 3, 4, ...,
255
General
- Connector: DB-25
- Board dimensions:
7.3" x 4" (185 mm x 100 mm)
Ordering Information
- PCL-833
- 3-axis Quadrature Encoder and
Counter Card
|
Home