Here is a short video of the first test running the axes (sorry for the poor quality as I tried to keep the file size reasonable):

<a href="http://www.youtube-nocookie.com/v/oYIXuNLr62c?version=3&amp;amp;hl=en_US&amp;amp;rel=0" target="_blank" rel="noopener noreferrer" class="bbc_link bbc_flash_disabled new_win">http://www.youtube-nocookie.com/v/oYIXuNLr62c?version=3&amp;amp;hl=en_US&amp;amp;rel=0</a>

Rapids are 8,000mm/min for the Z and half that for the X.

Dan

Looking real pro there Dan !
Very nice indeed.

About the tactile switches, are you sure what you are seeing is not the decel after the button is released ?
These snap action switches are normally fast and "clean".

Can't see the vid, says it private, get an error and it won't load here.

Nice work,
Russ

Hi Russ,

Thanks for the compliments.

I am sure about the buttons as when I jog from the keyboard it's perfectly responsive. With the keyboard I am able to do a very short touch on the key and the axis would hardly accelerate, moving just a bit. With the tactile buttons, on the other hand, no matter how short of a touch you try to do it would always move that minimal amount, managing to accelerate to full speed (or close anyway).

Sorry for the video. Please check now.

Dan

Dan,
  I  wonder if it could be due to being an external button, not just the button type.
Could verify by swaping with a good limit switch or other known good button ?
Might be the electrical "route" of the external circuit causing the delay ?

I'm just chatting, I'm certain you have a keen grip on it.
Anxious to see what you find out.

Thanks again,
Russ

A good idea, Russ. Will have to test with another switch and same wire length to be sure. Could be the wire inductance playing a role (thought currents being sunk by the ESS are extremely low)... hmm... but then as far as I can tell it does start immediately, but it's when I release that it lags. I will do the test to find out.

Thanks.
Dan

Looking good Dan, regarding the external buttons, it may just be the way it is via the ESS. I am not sure if the ESS handles the jogging internally or has to pass it to Mach, if the latter then that could be where the delay is, where a keyboard is connected right to Mach and not through a plugin.
Hood

Thanks Hood.

You and Russ were right about the external buttons. I just played with a simple push button in place of the tactile ones and it demonstrated same behaviour. Thought may be the controller frequency would have an effect on this, but it absolutely didn't.  Too bad it's the way it is as the jogging buttons  are almost useless

Dan

P.S.

LOL... just reread my post from yesterday and it's funny how I assumed it was wire inductance.... probably was late enough to make me think not clearly

How are you doing the Jog buttons? you have them set directly in Ports and Pins or are you using an OEM trigger?
Not sure if it would make any difference either way but may be worth trying the opposite of what you have.
Hood

Hood,

I had them set directly in Port and Pins. Just tried using an OEM trigger instead and it behaved absolutely strange - a single short button press and the axis doesn't stop till it hits soft limits.

Dan

It may not work well via OEMs but just on the offchance, did you have the active state set wrong  for the OEM Trigger input?
Two presses would likely start/stop if you do.
Hood