Need more outputs from G540

[dave57]

Anyone know an easy way to control more outputs when using a g540 other than the standard two? I need at least 4 outputs for the application I am working on.
I'm not using the vdf spindle control. Is there a way to use that output to trigger a relay and turn on/off a 115v device.
I am only using 3 axis for my steppers. Is there a way to use the 4th axis outputs to run more relays? I am using mach3.
This is my first cnc attempt, so please be specific and give as much detail as possible.

Thanks,

Dave

[rowbare]

Easiest thing would be to add a second parallel port to your computer and use a separate break out board for your additional inputs/outputs.

bob

[hewittrj78218]

Can I use a second parallel port on a CNC4PC C11 BOB?
I need to add home and limit switches a CNC4PC C16 Board and a tool probe.

Thanks Bob