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Thanks a lot. I will try.

I have tried this and evrything work OK. But problem was not with Amplifier but with limits - they are not tunded. I have turned them off and currently I work without limits.

Where can I look states of parallel port?

[quote="aleksamc" post=72684Where can I look states of parallel port?[/quote]

If you are using the Axis GUI then you can use Machine->Halmeter and set up a halmeter for each parport input.
Or you can go to Machine->Show Hal Configuration and use the "Watch" tab then select the parport pins.

Or you can use this: wiki.linuxcnc.org/cgi-bin/wiki.pl?Parallel_Port_Tester though hooking that up to a running config is a bit tricky.