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This board works as a master control board that will allow you to enable and monitor your cnc system. It will allow implementing a master start switch to enable the system. The board will then enable the drivers and a on-board relay. Then it will monitor the drivers, e-stop, and the safety charge pump. If any of these faults, it will disable the system and return to stand-by mode. On-Board LEDs will indicate the status of the board and will let you know what where the fault condition came from.

The board is implemented based on an ATMEL Microcontroller. That allows the implementation of complex algorithms. The firmware could be upgraded by replacing the chip that is mounted on a socket.

The board can also be configured using the on-board DIP switch. At this time you can enable and disable the safety charge pump, select the precision you want the safety charge pump to sample the signal at, and select the program for the driver you are using.



  • Monitors E-Stop, Safety Charge Pump, and Drivers (it only monitors (G320/340 drives at this time).

  • Microcontroller Based System. The microcontroller based system allows the implementation of complex algorithms for monitoring the system. It also allows the possibility of having firmware upgrades without having to change the board and rewire your system.

  •  On-Board Relay for controlling external devices. The board comes with an on-board relay that allows you to enable a breakout board, a contactor, a motor, or any other device. Multiple relays could be connected externally in parallel if you need to control different signals and currents. For example, you might need to use the external signal to enable a breakout board, then you need another signal to enable a contactor, and then another relay to interrupt the line that powers a motor.

  • LEDs indicate the status of the system and the cause of a fault.

  • All TTL +5VDC or +3.3VDC Signals. Interface directly with parallel port interface products and other cnc4pc.com cards. 5VDC (TTL) signals are very common among automation devices.


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