It sounds like the RS232 is not correct.

Is the com port on the pc a 9way or 25 way?

Wires 54 & 55 are the spindle analogue. It sounds as though it is allways sat around 11 volt DC. Thus causing the spindle to run at top speed.
It must be now down to one of the cards in the rack. I would presume that the fault is on the custom card.

Check the properies in Techsoft.

Check that the Fanucm config file is as below. C:\Denford\Config [Compact Router (metric)] Library=C:\Denford\Libs\FANUCM.SLB Extension=FNC Metric=1 Max Material Length=400 Max Material Width=200 Max Material Height=100 Max Feed=5000 Min Feed=20 Max Speed=23000 Min Speed=250 Max Cut Depth=20 HomeX=5...

Can you add a spindle speed to the machine parameters in Techsoft?

From your first image the value looks to be blank.

Also have a look in the properties when you select plot. There may be something obvios.

Can you post a copy of your design & fnc file?

Wonder if he still has the smock?

I have never come accros one fitted to a Dos controlled machine.

A new Sprint 1600i has now been fitted to rectify the fault.

It may be worth removing the two cards in the rack marked Euro Card & Custom Card.

Then make sure the ribbon is clamped in at both ends & then refitting.

It sounds like it is a bad connection either to the back plane or via the ribbon cable between them.

Refeerence procedure for a Fanuc 21I machine, without reference switches.

Yes sorry. Most Triacs were fitted with a Sprint 1200 drive. Your machine is slightly earlier & looks to have a Lenze drive in it. It may be worth removing wires 54 & 55 from the I/O board & repeating the test.

Th 11volts DC should drop.

Check the ribbon cables are all fully seated.

Can you take a picture of the Eprom on the card in the bottom left? It`s the one with the red 8 segment LED on it.

Have a look at the ribbon cable that connects the two cards in the rack together. Check both connecters are fully in.

It may be worth also taking a picture of the EPROM fitted to the control card.

You should be able to use the 9 way Com1 port on the pc.

I don`t think the licence for VRMilling is free.

It`s only the older dos software that is free.

Have a look at the three fuses on the backplane just above the axis drive cards.

Can you see if the x axis ballscrew has power to it by manually turning it with the E-Stop out & in?

The analogue goes in to the drive on terminals 2 & 3.


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