Hello Hood,
                I took some photos and videos of my gantry mill, the controller has 1 x C10 board + 6 SSR:






Video:
http://s1204.photobucket.com/user/cncfreakcncfreak/media/BVB25L%20cnc%20conversion/GantryMillMach3_zpsa9b556be.mp4.html

Looks like a big solid machine
One thing I would check up on is that you can mount that servo drive horizontally, most I have seen said they must be mounted vertically to get proper airflow.
Hood

The gantry was purchased as used about 2 years ago, is a 2.8m length, 1.8m wide, small machine compare to my neighbour's 5m long gantry. This machine only for facing, it is not suitable for positioning error is too large (lead screw).
Ill add a fan at the top of that amp some day.
I'm waiting for my new machine cover from Defender for the lathe:

http://www.machine-cover.com/products.htm

then will proceed encoder installation.

Hello I'm back, just had the X saddle drilled 6 threaded holes 3 each side for securing the cover.

Had the Index Pulse Interrupter Disc made:







will continue with the sensor holder after I come back from holidays!

Add a sensor holder:

Ok, Sensor installed, EE-SPX406: http://www.ia.omron.com/data_pdf/data_sheet/ee-spx-w_dsheet_csm474.pdf
Wire: brown = 24V, Black = Index signal, Blue = 0V
I set the Index Input to pin 10 port 1, how do I determine if there's signal coming in to Pin10? Mach 3 turn no Diagnosis tab?

Check the wire connection, the Index terminal was connected wrong and has been corrected and previously the 0v wire is not wired to BOB's com (gnd), Index pin is flashin in Diagnosis.
http://s1204.photobucket.com/user/cncfreakcncfreak/media/BVB25L%20cnc%20conversion/IMG_3953_zps859e6a27.mp4.html

Ok, I have been thinking a lot whether to use my servo drive in speed control mode or position control mode for spindle?
If I use speed control mode then I can use my spare C6 from cnc4pc to feed 0-10VDC to MRJ2S drive like this: