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Old 01-26-2011, 11:37 AM
 
Join Date: Jan 2010
Location: USA
Posts: 47
please no smoke is on a distinguished road
Need Brain to fire from M5 signal

I need a Brain to fire my dynamic spindle brake for a second or two when an M5 is issued through mach. Can anyone help me with the code?

Thanks
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Old 01-28-2011, 06:13 AM
 
Join Date: Aug 2007
Location: England
Posts: 213
stirling is on a distinguished road

Can't help you with a brian - never had need of one - how about a simple mod to the m5 macro? don't know your system but assuming your brake is applied simply by a mach output pin then something along the lines of:

Code:
'M5 macro
doSpinStop() 'stop spindle
activateSignal(OUTPUT?) 'apply brake on output number ? (you choose)
while isMoving()
  sleep 10
wend
sleep 2000 'apply brake for 2 seconds
deactiveSignal(OUTPUT?) 'release brake
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Old 01-28-2011, 09:51 AM
 
Join Date: Jan 2010
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please no smoke is on a distinguished road

Stirling,

That's a good idea. I might have tried that if my VB skills were better. I will use it.

Thanks
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Old 01-30-2011, 09:22 PM
 
Join Date: Jan 2010
Location: USA
Posts: 47
please no smoke is on a distinguished road

I had to change the signal wording for my output, but it works. The only problem is that it fires when mach estops. So it's kind of going off a lot when I'm messing around. Maybe there is a specific signal that can be used instead of the m5?
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Old 01-31-2011, 04:38 AM
 
Join Date: Aug 2007
Location: England
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stirling is on a distinguished road

can you post your modified code?
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Old 01-31-2011, 10:35 PM
 
Join Date: Jan 2010
Location: USA
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please no smoke is on a distinguished road

The code you had was ok. I had to replace the activate/ deactivate signal with....

SetMasterOutput(12, 1)
SetMasterOutput(12, 0)
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Old 02-01-2011, 03:19 AM
 
Join Date: Aug 2007
Location: England
Posts: 213
stirling is on a distinguished road

If I undertsnad you correctly the problem is that the brake is being applied even when the spindle wasn't actually on at certain times. The code below (untested) might give you an idea. It only fires the brake if the spindle was actually on. There may be better ways of doing this.

Code:
'M5 macro
Const SpindleOnLED = 11 '(CW Or CCW)
Dim spindleOn As Boolean

spindleOn = getOEMLED(SpindleOnLED)

doSpinStop() 'stop spindle

'if spindle on then apply brake
If spindleOn Then
  SetMasterOutput(12, 1) 'brake on
  While isMoving()
    sleep 10
  Wend
  sleep 2000 'apply brake for 2 seconds
  SetMasterOutput(12, 0) 'brake off
End If
(It should go without saying that E-stop should not rely on this or any other software. i.e. as well as everything else, the spindle brake should be applied by hardware following an e-stop too.)

Last edited by stirling; 02-01-2011 at 03:39 AM.
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Old 02-01-2011, 08:56 AM
 
Join Date: Jan 2010
Location: USA
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please no smoke is on a distinguished road

Looks great. I will give it a try. Thank you.
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