Originally Posted by
FranH
I'm no expert, however, I've beeen told that you may get some serious problems as the laptop is not grounded. The machine control is grounded via the circuit it's plugged into. The laptop is not....one of the wires is used by the machine controller and also used by a DESKTOP. The ground completes the circuit.
I would try a desktop and see if the problem disappears.
If the rs232 cable is wired properly there is a through ground wire in it. Laptop should be no issue.
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