Fehlmann Picomax 100 Retrofit

i did a short overread of the whole thread.

I can't find anything about exe boards in this thread... Could it be that you trying to connect the scales diretly to the mesa board?

This are analog scales with 11uA Output, to get a ttl signal for mesa, you need interpolation electronics like heidenhains exe boards...

This would explain a lot :side: Yea I was trying to connect them directly.
I was assuming they were normal ttl or htl scales. cause one came with the machine, but doesn't fit (it was for the scooter table length) and it is htl.

Thanks!

Watt started as, this should be an easy retrofit, is causing way more trouble than I expected. First check at these board look like they don't come cheap. So there are three options:

Keeping the scales and using an EXE board
+ Don' need to reroute the cables - old technology still don't know if one of the scales might be faulty and still old servos

Changing the scales to ttl or htl ones
+ they will work with linuxcnc -still old servos and initially a bit more expensive

changing the servos
+ new servos with encoders glas scales still are an option - most costly and the Z-axis might get funny

since I moved the machine I am considering option 2 at the moment. And maybe sea I can get some money by selling parts of the old control. I also still have the servos and drives from the Gildemeister but have no Idea what I would get for those parts.

may be you could use an board of the old control to interface the scales, like the others do with 3x exe board from the phillips control at old mahos.

the control has worked at ttl level, so there must be an part which converts 11ua to ttl....

The scales were directly connected to the Heidenhain 155 control, no box or card in between.

is there a way of find out how many increments the Z Axis encoder had?
ROD 456 5000 02S09-04 ID Nr 295 459 D.Nr. 14 165 553 A D5

Thanks Patrick

TNC155, then you will need Exe Boxes. This unit could not be used for interfacing.

ROD456 5000 , should have 5000 periodes per turn.
If this is an 5mm ball screw, will give 0.001 scaling.