Overview.
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 Inc).
Features
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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.
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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 Stepper board.
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IEEE 1284 Standard compatible. Includes the circuitry recommended by the IEEE 1284 Level 1 standards for bidirectional parallel communications between personal computers and peripherals.
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Works with regular parallel ports. Ribbon cables can be used to connect regular parallel ports.
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PULL-UP or PULL-DOWN selection for inputs. Includes jumpers to select the best input configuration for your application.
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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.
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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.
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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.
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Microcontroller based SCHP. This board comes with a microcontroller that allows the implementation of a complex algorithm for sampling and analyzing the SCHP signal.
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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.
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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
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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.
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PDF Manual for Rev. 3.1
PDF Manual
for Rev. 2.1
Wiring Guide
Wiring E-Stop & EN Pin
Product Integration with Smooth Stepper + C22 + MPG2/3/4
Analog Output Using a KBIC Speed
Controller
Connecting the analog output to a VFD. CW-On/Off and CCW-On/Off.
Connecting the analog output to a VFD.
Spindle On/Off and CW/CCW.
Sample XML Configuration File (Right Click/Save As)
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Fully optoisolated. 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 computer’s 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 circuit.
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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 device.
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34 inputs and outputs on 2 ports.
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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 CNC4PC.
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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
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