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Offline DAAD

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Soft stop not working
« on: March 22, 2020, 03:16:59 PM »
Hello,

I have troubles with the stop button in my mach screen. If i hit the stop button, the machine makes a hard stop, makes an ugly sound and looses steps.
In the mach config/general panel it is possible to check cycle stop is controlled stop.
But even with this box checked, the stop stay's "ugly". Nothing changes.

Any idea what i can do to solve this and get a gentle stop?

Adam
Re: Soft stop not working
« Reply #1 on: March 22, 2020, 03:22:50 PM »
Hi,
using the <Stop> button causes an immediate stop and aborts all movement commands in the motion buffer with
consequent loss of reference.

The correct procedure is <FeedHold> followed by <Stop>. Feed hold will allow the contents of the motion buffer (180ms by default with the ESS
for example) to be consumed and therefore no loss of reference when <Stop> is executed.

Craig
My wife left with my best friend...
     and I miss him!

Offline DAAD

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Re: Soft stop not working
« Reply #2 on: March 22, 2020, 03:24:54 PM »
Thanks for the reply!

Trying to do that, but when i try to be fast, the first button i hit is the stop button. :-)

So there is no solution to this but to control myself?
Re: Soft stop not working
« Reply #3 on: March 22, 2020, 03:52:31 PM »
Hi,
you could edit the code that backs the <Stop> button.

I have a similar problem, my intention with my new build mill is to have several physical <FeedHold>
buttons around the machine, and also an <Estop> button but its my intention that under normal operating I will use <FeedHold>
in preference to <Stop> or <Estop>.

Craig
My wife left with my best friend...
     and I miss him!

Offline DAAD

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Re: Soft stop not working
« Reply #4 on: March 22, 2020, 04:06:36 PM »
Tought off that, but then i still need a stop to stop the program.
Think i will make the button smaller so i go to the feed hold button.
Re: Soft stop not working
« Reply #5 on: March 22, 2020, 04:58:50 PM »
Hi,
the issue is that often when you want to either feed hold or stop a program you are doing it in a panic.
In a genuine panic either stop or Estop is appropriate, who cares if you lose reference?.

Under most circumstances feed hold is adequate, with the ESS at worst, when in default condition, is 180ms
between <FeedHold> and motion stopping, as I say adequate. I just don't want to scramble with the mouse or
even hit a touch screen. One or more physical buttons around the machine seems like a worthy addition to me.

Craig
My wife left with my best friend...
     and I miss him!

Offline smurph

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Re: Soft stop not working
« Reply #6 on: March 23, 2020, 04:30:05 PM »
Yeah, I'm generally not a fan of the Stop button.  My Matsuura MC500 didn't have a stop button on its' original control!  All it had was an E-STOP button, a feed hold button and a cycle start button.  When I retrofitted the machine with Mach 4, that is all I put back on it.  IMHO, on a Mill type machine, that is all that you need (and all I want).

Steve