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C23 Dual Port Multifunction CNC Board

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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 with sockets that allow direct connection of a Smooth Steeper Board (from Warp9 Tech Design Inc - not required).



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C23 Dual Port Multifunction CNC Board

Product Description

Dual Port Multifunction CNC Board

This analog can be adjusted using on-board pot, so this board can be adjusted to other voltages.
• Built-in 12 amp AC Solid State Relay.
It is very useful to use a solid state relay instead of a mechanical relay for starting motors or other devices that might produce arcs at contact. This will increase the life of the motors and relay. This relay is also optoisolated from the rest of the board and has a replaceable fuse.
• Two Built-in 10 amp Solid State 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. Both relays share the common VCC_IN, but one reacts to Pin 1 and the other one to Pin16. That way Pin1 can be used for the solid state relay or the electromechanical relay. Please note that both can be used at the same time.
• 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.
• Fully optosiolated
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 sgnal 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.
• 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.
• 34 inputs and outputs on 2 ports.
INPUT 5 13 18
OUTPUT 12 4 16
TOTAL 17 17 34
• Status LEDs on all inputs and output connections.
No more guessing. You can SEE all your signals. Save valuable time and brainpower for
• 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 nonoptoisolated 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.
• 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. The terminals next to pins 2-9 can be set to have +5VDC or GND according to your needs. There is a jumpers that allows you to select +5VDC or GND for the COM pins.
• Easy installation of an On/Off switch. You can control the card
An On/Off 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. 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, CNCZeus and other/ (Not all have been tested).
• Screw-On connections for all terminals.

Manuals & Downloads
C23specification (1772)