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C79 – Open Collector Expansion Board

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C79 – Open Collector Expansion Board

Product Description

This card provides an easy way to connect your inputs and outputs from your port using a LPH26pin Ribbon Cable or parallel port    Provides terminals for connections and conditions signals for use in CNC applications.


  • Terminal Block for all I/Os.
  • Buffered outputs.
  • Open collector Outputs Pins optoisolated 1, 14, 16, 17.
  • Expansion port for Mother Board. Connect the C76 and ESS expansion board.
  • Input pins 10, 11, 12, 13, 15.  2, 3, 4, 5, 6, 7, 8, 9
  • Terminal Block input with close by ground or +5vdc connections, COM and outputs with + 24vdc and ground
  • Screw-On connections for all terminals. You only have to screw-on the wires to make all your connections.
  • Status LEDs for enable.
  • Fully Optoisolated Inputs and Outputs.
  • External Enable Pin
The C79 and C80 are sister boards.  The C79 uses pins 2-9 as inputs and the C80 uses pins 2-9 as outputs. 
  • C79 Pins 2-9 = Inputs.
  • C80 Pins 2-9 = Outputs.

Product Manual

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