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Author Topic: feedrate changing after spindle stop part 2  (Read 5100 times)

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Offline BR549

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Re: feedrate changing after spindle stop part 2
« Reply #20 on: June 19, 2015, 11:17:32 AM »
Unless you include an F statement in the init string then Mach3 does NOT have a default feedrate .

(;-) TP
Re: feedrate changing after spindle stop part 2
« Reply #21 on: June 21, 2015, 08:15:39 AM »
thanks BR540- seems that is what is causing my concern

the configuration is set a 25000 and when i look at the diags the reported speed is 23800( or thereabouts)

could this be the cause ?

This whole problem has led to me doing quite a lot of research and for anyone else who
may be interested in the topis take a look at  "Google Mach3 feedrate " ther are many posts about the same thing.

thank you all very much - i think this answers my queries.

regards from South africa
think of the trees-- use both sides of the computer paper
Re: feedrate changing after spindle stop part 2
« Reply #22 on: June 21, 2015, 08:22:28 AM »
Br549-- a last question
I am not calling css in the code but the initstring is using "constant velocity"

Is this the same thing - any wat i have changed it to exact stop to see what happens

regards

fred



think of the trees-- use both sides of the computer paper
Re: feedrate changing after spindle stop part 2
« Reply #23 on: July 05, 2015, 08:23:02 PM »
I don't know, but there seems to be something lurking in the depths of the code ... a few days ago, my feedrate changed suddenly from 70 mm/min to 1000 mm/min and couldn't be changed with the f word. A reboot fixed that, but not the tool  >:(

If that's now good or bad, that this was a one-of-a-kind-accident ...?
Re: feedrate changing after spindle stop part 2
« Reply #24 on: July 06, 2015, 03:21:26 AM »
Hello Stephan--
When I changed to f per minute the problem went away and I was able to
finish the job i was on .
Then I had a gearbox failure so I havent used the machine for the last week
or so.
Please keep us informed
regards

fred
think of the trees-- use both sides of the computer paper