This card has been designed to provide a flexible interface and
functions to computer CNC projects, by using the parallel port
control software. This board comes with sockets that allow direct
connection of a Smooth Steeper Board (from Warp9 Tech Design
Support for up to 1Mhz optoisolation on step
and direction signals. All inputs and outputs are buffered
through the use of high speed and high power buffers. Each pins
deliver 24 milliamps.
Connects directly to the Smooth
Stepper (from Warp9). The board is provided with sockets
that allow the Smooth Stepper Board to be plugged directly into
this board. No ribbon cables required. When using the Smooth
Stepper board there is no need to use an additional power supply to
power the optoisolators, the board will draw power from the Smooth
IEEE 1284 Standard
compatible. Includes the circuitry recommended by the IEEE
1284 Level 1 standards for bidirectional parallel communications
between personal computers and peripherals.
Works with regular parallel
ports. Ribbon cables can be used to connect regular
PULL-UP or PULL-DOWN selection for
inputs. Includes jumpers to select the best input
configuration for your application.
Built-in Passive Low Pass Filters for
the all signal. This board includes low pass filters to
reduce the effect of the noise from the drivers or other devices
over the signals.
Built-in Safety Charge Pump.
There is an on-board safety charge pump, which is a circuit that
acts a watch dog by monitoring that mach is in control of your
system. Mach can be programmed in a way, so when it is in
control, it delivers a 12.5 KHz signal through one of the ports.
This card lets you use this signal to work as an On/Off Switch for
your system, enabling a powerful safety system for your equipment.
If you ever had windows crash on you, then this card is for you.
The parallel port can also do weird things while the system is
coming up, or down.
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 pot, so
this board can be adjusted to other voltages.
Microcontroller based SCHP. This
board comes with a microcontroller that allows the implementation
of a complex algorithm for sampling and analyzing the SCHP
Two Built-in 8 amp Electromechanical Relay
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 (Normally Open and Normally Closed) positions. This relay can
also be used for controlling spindle rotation.
The common terminal to pins 2-9 can be ground
or +5vdc. The common terminal to pins 2-9 can be ground or
+5vdc. When you select program for the driver to used, COM
will automatically become what the driver will need. If you select
the program for the G320, COM = +5vdc, if you select the program
for the G203V, COM = GND
All pins can be used in a concurrent
manner. You can use all the input or output pins in a
concurrent manner. For example, if you are using output pin #1 to
control the Built-in Solid State Relay Board, you can also access
that signal from the output pin on the board or from the DB25
connector for output. Each connection will not affect the other
current from the other connection.
PDF Manual for Rev.
PDF Manual for Rev.
Wiring E-Stop & EN
Product Integration with
Smooth Stepper + C22 + MPG2/3/4
Analog Output Using a KBIC
Sample XML Configuration
File (Right Click/Save As)
The card isolates connections to protect your computer from
short-circuit or power surges. An opto-isolator 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, the
computers electronics are completely isolated from the
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. That is the reason why this card has two
power connections. One power connection is power powering the
circuit that interacts with the PC, the other connection is for
powering the circuit that interacts with your cnc system. Extra
precautions have been taken when designing this circuit, by taking
into consideration the extremely high voltages that stepper drivers
can achieve and lack of experience that some users could have in
wiring circuits of this kind. This board keeps the grounds of the
PC isolated from the grounds of the rest of your CNC
External Enable Pin
(EN). The board has a pin that allows you to
enable/disable all the outputs at once. The board requires +5vdc in
the EN pin. If it is not present, it will send all the outputs to
ground. You can use this to enable or disable the system manually,
or you can install an external Safety Charge Pump or other external
34 inputs and outputs on 2
Status LEDs on all inputs and
output connections. No more guessing. You can SEE all your
signals. Save valuable time and brainpower for cncing.
Has an extra 2 DB25 female
connection for output. You can use this card to
optoisolate any existing setup just by connecting this card between
your computer and your current setup. That way, you can also see
and access all your signals. This makes this card ideal for use
with the xylotex, hobbycnc or other non-optoisolated boards. You
only have to add this board to a DB25 male connection to a male
cable. On the second LPT2 you can connect the pendant supplied by
Works directly with popular
CNC hardware and software. Such as Geckodrive, DeskCNC or
Rutex, and parallel port control software, such as mach2, Linux
EMC, TurboCNC, CNCZeus and others. (Not all tested)
BREAKOUT BOARD COMPARISON CHART