Advantech PCI-1242 Manual de usuario descargar pdf (Pagina 19)

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ICOM

Motion Control

ADAM-3000

cPCI

DA&C

ATM & AWS

FPM

TPC

IPPC

Software

eConnectivity

UNO

ADAM-4000

ADAM-5000

ADAM-6000

ADAM-8000

BAS

All product specifications are subject to change without notice Last updated : January 2005

EGND

CH0A+

CH0B+

CH0Z+

CH1A+

CH1B+

CH1Z+

CH2A+

CH2B+

CH2Z+

CH3A+

CH3B+

CH3Z+

IDI COM

IDI0

IDI2

EGND

IDO0

IDO2

CH0A-

CH0B-

CH0Z-

CH1A-

CH1B-

CH1Z-

CH2A-

CH2B-

CH2Z-

CH3A-

CH3B-

CH3Z-

EGND

IDI1

IDI3

EGND

IDO1

IDO3

231

Pin Assignments

Block Diagram

PCI-1784

Ordering Information

 PCI-1784 4-axis Quadrature Encoder and Counter Card

 PCL-10137H-1 High-speed DB37 cable assembly, 1m

 PCL-10137H-3 High-speed DB37 cable assembly, 3m

 ADAM-3937 DB37 Wiring Terminal Board for DIN-rail mounting

Feature Details

Encoder Interface

Each channel 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 PCI-1784 has four independent 32-bit counters. The maximum quadrature input rate

is 2 MHz, and the maximum input rate in counter mode is 8 MHz. You can individually

configure each counter for quadrature decoding, pulse/direction counting or up/down

counting.

Digital Input and Interrupts

The PCI-1784 provides four 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 and overcompare/undercompare of its counters, or on a programmed

time interval. It can repeatedly generate interrupts at any time interval you specify, from

20 microseconds to 51 seconds. These interrupts let you precisely monitor the speed

of a control system.

Flexible Digital Output function

The PCI-1784 provides four digital output channels. Each channel accepts digital output

as a normal TTL output for a rotary encoder, or as an indicated output with pulse/level

mode for a linear encoder. The PCI-1784 can generate an indicated output based on a

signal from overcompare/undercompare of its counters. The pulse width of an indicated

output depends on the counter clock or clear interrupt.

Special Shielded Cable for Noise Reduction

The PCL-10137H shielded cable is specially designed for the PCI-1784 for reducing

noise. Its wires are all twisted pairs, and the input signals and output signals are separately

shielded, providing minimal cross talk between signals and the best protection against

EMI/EMC problems.

BoardID™ Switch

The PCI-1784 has a built-in DIP switch that helps define each card’s unique ID when

multiple PCI-1784 cards have been installed on the same PC chassis. The BoardID switch

setting function is very useful when users build their system with multiple PCI-1784 cards.

With correct BoardID switch settings, you can easily identify and access each card during

hardware configuration and software programming.

Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

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