DIR Pulse

[ich-bin-du]

Hello,

Can anybody tell me, how long the DIR Pulse for the X,Y or Z takes "High" in mach3?

In Motor tuning is written down, that I can take a time between 1 and 5µs, but I can write down 7 or 8. is the signal then 7 or 8µs long or only 5µs?

I hope you understand my bad english

Greetings
Michael

[Dan13]

Hi Michael,

The values entered in those fields is the amount of time to be added to the standard pulse width (around 3uSec). So if you enter 5 there you will get an 8uSec pulse width. I think it is only true for the step pulse, the direction signal being just a change of state, but am not sure about this as some time ago someone was reporting a different behaviour (although with SmoothStepper) which was never confirmed by other users.

 If you need a wider pulse than that then use Sherline Mode (under Ports and Pins), which will give you around 20uSec pulse width.

Dan

[ich-bin-du]

Hey

Oky thanks, that was it, i was looking for

greetings
Michael

[ger21]

The values entered in those fields is the amount of time to be added to the standard pulse width (around 3uSec). So if you enter 5 there you will get an 8uSec pulse width.

Are you sure? I've never heard this before.

If you need a wider pulse than that then use Sherline Mode (under Ports and Pins), which will give you around 20uSec pulse width.

I believe Sherline mode is 40us pulse width.

[Dan13]

Hi Gerry,

I am only sure I remember Art or Brian mentioning it, but whether it's really the way it works I don't know.

Regarding Sherline mode, I am sure about it, as half the cycle time at 25Khz kernel is 20uSec

Dan