Hi, Brian
Just using Encoder 4 input for a 2nd Z axis, Spindle on a Bridgeport for manual position Reference see below.
The 3 encoders on Settings page, X Y Z are used, in Ports-pins Encoder/MPG's X Y Z (4) are available.
Just no Zero Button for 4'th.
Zero X Encoder 1 133
Zero Y Encoder 2 134
Zero Z Encoder 3 135
Zero A Encoder 4

OEMCODE, it's not listed in Wiki
Thanks, Chip
Re: Bridgeport extrak retrofit
« Reply #6 on: November 27, 2006, 07:46:53 PM »
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Hi, Rogerbsstt
Disregard my earlier Post on this, Hears a better way, I Think.
Hear is a screen .set I modified just a little, You need to set under, config, ports & pins, Encoder/MPG's, Encoder 4 to your A,B output to this.
Enable Encoder 4 Set A-port to 1, B-port to 1, then use 2 unused pin's on port 1 for your A, B, encoder input pin's,
Pin's 10-13,15 are the only one's you can use, Set the Count Unit's to 1000 - 4000, probably, 4000 to calibrate for .001 div., Click on Apply then OK.
Just make sure there outputs are no more than 5 Volt's.
Under Operator, Click on Auto/Calculator this will give you a Pop-Up window to Zero it, it works on other items also really nice.
To Zero the Quill Z click on DRO, Use, Calc. Window to edit, You can pre-set to most any value.
Or use keyboard to edit, Don't forget to hit enter Key.
Don't think I left anything out.
Oo, copy the set file to your Mach3 Folder, load-it give it a try.
Helps, I Hope, Chip.