Measure the Rx & Tx lines out of the scanner when it is not sending - are they resting something besides 0 or 5V? Like + 10, +12V, maybe -10 or -12?
Then they are using RS232 levels and you will need the adapter, or make one up.
Measure the Rx & Tx lines out of the scanner when it is not sending - are they resting something besides 0 or 5V? Like + 10, +12V, maybe -10 or -12?
Then they are using RS232 levels and you will need the adapter, or make one up.