Analogue controllers rely on the servo encoder to know how far things have moved (I'm assuming you'll have encoders fitted given your machines age, but there is a possibility of having resolvers fitted, which are a nightmare to use with any modern controller).
The controller is continually adjusting the analogue output to maintain position based on the encoder position.

Provided your servos have encoders fitted (there should be another multicore cable on the rear of the servo), a KFlop and Kanalog will work.
The KMotionCNC software is pretty basic, but it does the job.
The biggest issue you might have with a KFlop, is most of the config and any custom coding is done using C programs. It does mean you need to understand at least the basics of C, but it also means it can be programmed to do some quite advanced controlling.

I did have a quick search of the Denford forums last night after posting, and see Duplomatic turrets appear to have been used on newer machines. I think the biggest issue you'll have with the turret, is figuring out how to control it. I couldn't see anything.
I've just done another search, and found this document on the linux cnc forum - https://forum.linuxcnc.org/media/kun...50-1412-en.pdf which seems to suggest Duplomatic supply their own control board, so I'm going to guess they don't publish exactly how the turret operates. And if you don't have that controller, you could have a major problem.
I'd start by asking on the Denford forums, and emailing Duplomatic (https://www.duplomaticautomation.com/), to try and find out about the turret, as without a functioning turret, a Cyclone isn't much use.