Which of the wires goes to the pin / gives a pulse?

Question

Arduino

Hello!
We have an ICT UCA2 coin acceptor. The diagram of the wires that come from the coin acceptor is in the photo. Help with connecting Arduino. which of the wires goes to the pin / gives a pulse?
Thanks in advance!

Answer 1

If I'm not mistaken, then there is a series of pulses on CREDIT corresponding to the face value of the coin.

Answer 2

Are you too lazy to look at the datasheet on the coin acceptor?
if you use the Pulse interface, then the signal from the coin acceptor is via CREDIT / TIMER, back via INHIBIT +
in the case of RS232 - pins 1,6,7,8.