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thank you for your reply but this does not work for me as even if I removed the time.sleep the motor moving with the same speed

The 7I76EU (and 7I76U) have 3 new parameters and the 7I84U has 2 new parameters

The main 2 added parameters are 7i76.[port].[chan].output_source and 7i76.[port].[chan].output_sink. or
7i84.[port].[chan].output_source and 7I84.[port].[chan].output_sink. These are 16 bit masks
that control the field output mode. Each xxxx.output_source  bit controls the source attribute
of the corresponding output bit and each xxxx.output_sink bit controls the sink attribute. The
default setting is for all source mode (xxxx.output_source = 65535 or 0xFFFF, xxxx.output_sink
= 0 or 0x0000) which means a 7I76EU, 7I76U or 7I84U behave like a 7I76E,7I76 or 7I84.

So for example:

xxxx.output_sink = 0 = 0x0000
xxxx.output_source = 65535 =0xFFFF
 = normal all sourcing mode (like 7I76E, 7I76,7I84, this is the default)

xxxx.output_sink = 65536 =0xFFFF
xxxx.output_source = 0 = 0x0000
 =  all sinking mode  (like 7I76ED,7I76D,7I84D)

xxxx.output_sink = 65280 =0xFF00
xxxx.output_source = 255 = 0x00FF
= outputs 0..7 are sourcing mode, outputs 8..15 are sinking mode

xxxx.output_sink = 65535 =0xFFFF
xxxx.output_source = 65535 = 0xFFFF
= all outputs are in push-pull mode

Note that each of the 16 output bits can be individually setup for
sourcing, sinking, or push-pull mode.

The 7I76EU and 7I76U also have a spinmode parameter to set the spindle output
bit mode when this is 0 (default) the isolated spindle output bits are ENA and DIR as before.
If the spindle mode bit is set to 1 , the isolated spindle output bits now function
as FWD and REV.


 

I see what you mean.
I'll look at the numbers again, especially as I've only recently realised the INI stores velocities as mm/sec, and the GUI is in mm/min.

Vielen Dank
funktioniert wunderbar.
Wieder was gelernt
Auch vielen Dank für den Link:
linuxcnc.org/docs/html/gcode/overview.ht...:overview-parameters
Da sollte ich doch öfters mal reinschauen.
Wofür brauch ich das?
Ich möchte eine Pitch-Error-Datei bzw. Leadscrew-comp-Datei halbautomatisch erstellen lassen.
Das Programm funktioniert schon.
Gruß Peter

In the  top plot, it looks to me like you have the maximum velocity faster the the drive can go
(so the following error rapidly increases when you reach the limit)

Normally you will need to set LinuxCNCs velocity limit to 80-90% of the machine velocity at 10V