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STV is Zero Speed Command and RS is General Lock. Both signals are necessary for the servos.
But I also just see, my question was false. I want to switch signal 19 over the Mesa and ENA. With the old Sinumerik signal 10 (on both amplifiers) is switched with a safety relay and signal 19 (as far as I can see) is switched separately. The 15V is auxiliary voltage from the amplifier. I've already measured this. Therefore I think I can connect 19 to ENAx+ and 14 to ENAx-.

Marc
 
 

Hi frayja2002. I have the same problem. How did you fix the error?
File "upload_config.py", line 7, in <module>
import tftpy
ModuleNotFoundError: No module named 'tftpy'

Looks reasonable.

One thing: never disconnect a stepper motor from the drive with the drive powered up. I don't know for sure that that will blow up a TB6600, but it's definitely not somethng that a TB6560 could survive.

rodw wrote:

But none the less I too was gobsmacked when starting off to find the documentation runs to 1347 pages!

 

Yet people still sometimes complain that there isn't enough documentation....

And it's true, I think. For example we really could so with a section on toolchangers. 
 

Is there any indication what /STV stands for? Do you have something that makes you think that's the enable? If it is, then it is shown permananently wired, which seems a little unexpected.
I think you have the polarity right.
I am not clear if that (19) 15V is an output or not, but a multimeter would answer that question.