I am trying to understand how to hookup LEDs to the parallel port of a DG600F coin acceptor. The technical manual states that the pins are active low. So do I connect the cathode to ground or anode to 5 or 12v connector?
I also want to know if the 12v of the parallel port is tolerant of 15v because my power plug-in adapter is reading 15v.
I saw a YouTube video (in Spanish) showing the hookup of both and serial port but explanation of the circuit was not clear. I already checked this forum for parallel connection but only getting stuff about the serial port.
Any help will be greatly appreciated.