I need to make a commuication between a DG600F coin acceptor and an arduino uno, using a RS232 serial port.
When we insert a coin, we would obtain a value between 0 and 6 but the card always receives 255.
Here is the code and the output console. There is also the documentation : https://mechanicape.nl/sites/default/files/coin-acceptor-programmable-6coin-types-datasheet.pdf
By the way, we seen that the data cable send a value with a really low voltage (about 0.2 V), is this a kind of problem ?
Thanks for answering,