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I'm saying you might need a 'Null-Modem' cable. If you connect a computer's RS-232 port to another computer's RS-232 port you have to have a 'Null-Modem' cable for them to communicate. RS-232 ports...

If you have your laptop connected directly to the machine's RS-232 port you probably need a 'null' modem cable (RS-232 cable with the transmit and receive wires switched on one end).

Here's a screenshot...

First off, I'm Bill, from Lewisburg, TN and it's nice to meet you. I have recently been being required to add engraving (Company logo, part name & part number) to many of our accessory parts on our...