CNC4PC C1G User manual

http://cnc4pc.com 1 / 3 Revision: 03/05/2007
Overview
This card has been designed to provide a flexible interface to your computer projects, by
using the parallel port control software. The screw-on connections to all terminals provide you
with an easy way to wire your connections. This flexibility enables you to achieve a quick and
straightforward integration with many popular software and hardware packages. This board is
offered for users that do not need optoisolation for the output signals that go to the drivers,
because they are using drivers that already have optoisolated inputs, such as the Geckodrive
family of products.
Features
•Partially optoisolated
The card isolates connections to protect your computer from short-circuit. An optoisolator is
an integrated circuit that transmits the signal through an encapsulated LED and
phototransistor. When the signal is on, the LED lights up, the phototransistor captures it and
relays the signal. In that way, your computer’s electronics are completely isolated from your
circuitry. The signals are transmitted through light and not through physical connections. In
this way, a power surge has no way of reaching your computer. Only outputs 2-9 are not
optoisolated. Input pin15 and output pin 16 have high speed optoisolators. These can be
used to receive and send optoisolated step or frequency signals. A typical use for this would
for connecting an input from and index pulse that would read the rotation of the spindle. A
typical step signal would be the frequency to run a safety charge pump, a PWM signal, or a
the step signal for running the C6 – Variable Speed Control. No optoisolation is provided for
grounds.
•Buffered outputs.
All inputs and outputs are buffered through the use of high speed and high power buffers, with
the result that your devices receive all the power they need.
•Output pins 1,2,3,4,5,6,7,8,9,14,16,17.
•Input pins 10,11,12,13,15.
•Status LEDs on all inputs and output connections.
No more guessing. You can SEE all your signals. Save valuable time and brainpower for
cncing.
CNC4PC
Manual
C1G - PARALLEL PORT INTERFACE CARD

http://cnc4pc.com 2 / 3 Revision: 03/05/2007
•Input and output pins with close by ground connections.
Forget about grounding problems. Easily connect your pin by using your close by ground
connection. No need to be an electronics expert to ground all your stuff.
•Easy installation of an On/Off switch. You can control the card
externally.
An On/Off switch or a Safety Charge Pump can easily be installed to enable or disable the
card. CNC could be dangerous machines and, remember, safety comes first. This card is
provided with an extra pin (EN) that allows you to control the card externally by enabling or
disabling outputs externally. The card must have +5vdc supplied in the EN pin to enable
outputs.
•All TTL 5VDC signals.
Interface directly with parallel port interface products and other CNC4PC cards. 5VDC (TTL)
cards are very common among automation devices.
•Works directly with popular CNC hardware and software.
That goes for Geckdrive, DeskCNC or Rutex and parallel port control software such as
mach2, Linux EMC, TurboCNC, CNCPlayer, CNCZeus and other/ (Not all have been tested).
•Screw-On connections for all terminals.
You only have to screw-on the wires to make all your connections.
Installation
Requirements:
A 5VDC, 1 amp power supply is required for operation.
Wiring:
Check the sample installation below (Coming soon).
.
1. Connect +5vdc@ to power the board.
2. Provide +5 to enable pin next to the power connection.
3. You can connect the parallel port cable and run your control software. You should be
able to see the status of each pin.

http://cnc4pc.com 3 / 3 Revision: 03/05/2007
Dimensions:
Disclaimer:
Use caution. CNC machines are dangerous machines. DUNCAN USA, LLC nor Arturo
Duncan is liable for any accidents resulting from the improper use of these devices.