C11G (Rev.8.2) User Manual

Revision: 01/27/2010 http://cnc4pc.com/TechDocs/C11GR8_2_User_Manual.pdf 1/21

C11G- MULTIFUNTCION CNC BOARD

Rev. 8.2

User manual Rev. 2

1. Overview

This card has been designed to provide a flexible interface and functions to your

computer projects, by using the parallel port control software. This board comes as a

response to many customers that have been asking for a faster way to connect

devices and reduce the possibility of wiring errors.

2. Features

• IEEE 1284 Standard compatible.

Includes the circuitry recommended

by the IEEE 1284 Level 1 standards

for bidirectional parallel

communications between personal

computers and peripherals

• PULL-UP or PULL-DOWN

selection for inputs.

Includes jumpers to select the best

input configuration for your

application.

• Buffered inputs and outputs.

Outputs are buffered through the use

of high speed and high current

buffers allowing the card to output

the signals without using the power

from the parallel port. It can take the

+3.3 or +5vdc signal from the parallel

port and deliver solid +5vdc at 24

milliamps.

• Microcontroller based SCHP.

This board comes with a

microcontroller that allows the

implementation of a complex

algorithm for sampling and analyzing

the SCHP signal.

• Built-in Variable Speed Control.

It has an optoisolated analog 0-

10VDC output that will convert a step

signal into an analog signal that can

be used to command a commercial

VFD. This analog can be adjusted

using on-board potentiometer, so this

board can be adjusted to other

voltages.

• Two Electromechanical Relays

with NO and NC positions.

Mechanical relays are very flexible

because they can be used for AC or

DC and come with NO and NC

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