Hi,
just to be sure, when you hit the Estop button Mach is disabled? With the Estop button released you can <Reset> and Mach Enables? This proves that
you have basic communication between the parallel port and Mach.
On Config/Ports and Pins make sure Port1 is enabled and on the Motor Outputs page enter on the X axis Enabled, pin 2, pin3, port1,port1 per the screenshot attached.
Hook your driver to the Step/DIR pins.
On the MDI page hit <tab> and the jog flyout will appear and you should be able to jog the X axis. If The Jog Control LED is light then the arrow button should work
too.
Craig