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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