Looking for a 6axis+spindle breakout board for Mach3--Windows 10  Prefer US, but will use china, amazon? 

I would like to send multiple signals to a relay.  Example: 1 signal would =action A, 2 signals would =action B and so on.  Is it possible to send a set of signals between gcode lines using the spindle output?  Or can I send that same type of signal through an output port pin and get the same result. Basically a series of output signals on same line of code.

if you want to run W10 you have to look for a external Motion Controller, i simple BOB for PP will not work.

I'm currently using the bob pictured in this thread running W10.  All is working fine.  I'm new to gcode.  Is it possible to write gcode of just using one output to a relay to turn on /off 250mls, on/off 250mls then on?

you can write a custom macro for this for example M400.M1s

and in Gcode it is yust called be using M400