Can you ask the manufacturer?
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That's your single best bet. Give them a call, you should be able to get through to the right person eventually. Looks like a lincoln product or they bought the company. Either way, it says they still provide support.
Else, you can probably solve this with some math. Look at the servos/steppers/whatever. Find the part number for their encoders, punch that into google, and find the datasheet for it. use that number, whether it's 1000, 2000, 4000 counts per rev. Put the machine into jog mode and jog it sloooowwwly. Move it 1 inch, see if it actually moved one inch. If it seems controllable, moving it further will show you errors more easily.
If it moved an easy multiple of that, then just adjust the encoder count appropriately- If you set it to 2000 and it moved twice as far as anticipated, then set it to 1000.
Now this is assuming it knows the leadscrew or rack and pinion pitch. If it doesn't, you may have to determine the leadscrew pitch or sort out the ratios on your r+p and multiply or divide the encoder count accordingly.
Once you think you have it figured out, run some long travel moves and check them, and then cut some parts and confirm it's working properly.
Good luck!
