I'm a Fadal newb (learning quickly though) as I just got a 4020 (1993, cnc88, 1400-4 processor).
The machine came with a vh-65 rotary table, but the machine does not have an amplifier card or axis control card for the 4th axis. The 4th did come with an external indexer control which you program with G-code right on the control box.
This indexer system must have been available for only 1 or 2 years? because I can't find hardly anything about it out there - even only found 1 picture of the same system.
It is my understanding that the indexer box can be setup to recieve a signal from the CNC88 control, it will then execute it's next line of code and index the table, then the indexer box will return a signal to the cnc88 saying that it is finished where by the cnc88 will resume the program.
There is a 4 pin jack, and a 25 pin (looks like 3 used pins only tho) serial connector on the back of the 'Servo Controller Model 1' box.
Anyone know how to set this baby up!? Anyone have a manual for it?
Thanks!