Desktop size steel welded router 3 axis

[JAZZCNC]

Summarize, if I use TB6550 or similar BOB which has only 5 inputs: 1-X, 2-Y,3-Z,4-Limit/E-stop,5-GND than 3 switches used as home/limits detect the ground signal (NC-active low). Mach knows that this axis is in home position.
How should I wire if I use the same switch as Limit? Can not wire the same switch to pin 4 (limit/E-stop)
Using pin 4 will collide with homing (all switches will be in parallel - remaining two will have NC contact therefore no homing)
Jazz, could you please send the wiring - loosing plot.

You got me bambozzled now and Not quite sure what your asking for but here's quick diagram showing 2 options. Option #2 is probably your best option.