1284 Standard compatible. Includes
the circuitry recommended by the IEEE 1284 Level 1 standards for bidirectional
parallel communications between personal computers and
or PULL-DOWN selection for inputs. Includes
jumpers to select the best input configuration for your
inputs and outputs. Outputs
are buffered through the use of high speed and high current buffers allowing the
card to output the signals without using the power from the parallel port. It
can take the +3.3 or +5vdc signal from the parallel port and deliver solid +5vdc
at 24 milliamps.
pins 1, 2, 3, 4, 5, 6, 7, 8, 9, 14, 16, 17.
pins 10, 11, 12, 13, 15.
common terminal to pins 2-9 can be ground or +5vdc. 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
board has a jumper that allows you to select if the common terminal to pins 2-9
will carry a ground or +5vdc. So if you are connecting encoders or proximity
switches, you can select it to ground. If you are connecting Geckodrives or
limit switches, you can set It to be +5VDC.
Enable Pin (EN). The board has a pin that allows you to enable/disable all the
outputs and inputs 11, 12, 13 and 15 at once. Only input 10 will be always enabled. The board requires +5vdc in the EN pin. If it is not present, it
will send all the outputs to high impedance and the inputs to an high. You can
use this to enable or disable the system manually, or you can install an
external Safety Charge Pump or other external safety monitoring
directly with popular CNC hardware and software. Such
as Geckodrive, DeskCNC or Rutex, and parallel port control software, such as
mach2, Linux EMC, TurboCNC, CNCPlayer, CNCZeus and others. (Not all
TTL 5VDC signals. Interface
directly with parallel port interface products and other CNC4PC cards. 5VDC
(TTL) cards are very common among automation
connections for all terminals. You
only have to screw-on the wires to make all your connections.