issue with uccnc locking up

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issue with uccnc locking up

Postby Limitless Creations » Sun Oct 25, 2020 8:47 pm

Im having an issue with UCCNC locking up sometimes on my cnc plasma table. I have taken a video that shows when it locks up. I have to click the torch on off button to get it to move. please help me as this is driving me nuts, I cannot walk away from the machine at all.

https://www.youtube.com/watch?feature=s ... pp=desktop


here is a copy of my post processor

--************************************************
--*** Set these values up to suit your machine ***
--************************************************

--this is the distance between each torch reference in MILLIMETRES
refDistance = 0

--this is the reference feed rate in mm/min
refFeed = 2540

--Put your switch offset value here in MILLIMETRES
switchOffset = 6.54

--Scriber X,Y,Z offsets in MILLIMETRES. Do not use inches here even if you want inch code
--Use the special code 'nil' on the Z axis to disable it.
--In that case no Z values will be output at all while scribing.
--e.g scriberZ = nil
scriberX = 110
scriberY = 220
scriberZ = 0

--scriber axis. Leave this as nil if the scriber is fixed to the same axis as the torch
--scriberAxis = "A"
scriberAxis = nil

--If this value is set to true then use G28 (home) for the Z reference
--Set it to false for G31 probe
refHome = true

--The cutter will slow down for corners and turn off THC below this radius
slowRadius = 10

--Minimum slow down speed.
--This is a scale factor. For instance 0.5 = 50% of the current feed rate
slowPercent = 0.4

--THC on and off codes. Use nil if you don't want THC control e.g:
-- thcOnCode = m205
-- thcOffCode = m206

--here is another example that use M667 and M666
--thcOnCode = " M205"
--thcOffCode = " M206"

thcOnCode = M205
thcOffCode = M206

--************************************************
--*** End of settings ***
--************************************************



function OnAbout(event)
ctrl = event:GetTextCtrl()
ctrl:AppendText("plasma MP1000-THC post processor with engraver\n")
ctrl:AppendText("\n")
ctrl:AppendText("Modal G-codes and coordinates\n")
ctrl:AppendText("Comments enclosed with ( and )\n")
ctrl:AppendText("M03/M05 turn the torch on/off\n")
ctrl:AppendText("M08/M09 turn the engraver on/off\n")
ctrl:AppendText("Incremental IJ - set in mach2\n")
ctrl:AppendText("The torch is referenced at cut start and every 500mm of movement thereafter\n")
ctrl:AppendText("Designed for use with Mach3 and CandCNC MP1000-THC and Floating head Touch-n-Go\n")
ctrl:AppendText("Post variables:\n")
ctrl:AppendText("refDistance - set the distance between each reference\n")
ctrl:AppendText("refFeed - set the feed rate when referencing\n")
ctrl:AppendText("switchOffset - set your net switch offset amount \n")
ctrl:AppendText("Scriber uses any tool number\n")
ctrl:AppendText("slowRadius - slow down below this radius\n")
ctrl:AppendText("slowPercent - minimum percentage to slow down\n")
end



-- created 1/1/06
-- Based on plasma1.post


-- Modified 21/6/2010
-- added option for 'nil' plate marker z
-- Added support for plate marker tool type as well as tool number based plate marker

-- Modified 4/11/2010
-- Added: Reference the torch on the first pen down if the plate marker is the first tool used.


post.DefineVariable("refDistance",sc.unitLINEAR,0,1e17)
post.DefineVariable("refFeed",sc.unitFEED,0,1e17)
post.DefineVariable("switchOffset",sc.unitLINEAR,-1e17,1e17)
post.DefineVariable("slowRadius",sc.unitLINEAR,-1e17,1e17)
post.DefineVariable("slowPercent",sc.unitPERCENT,-1e17,1e17)

function OnInit()

offX = 0
offY = 0
offZ = 0

post.SetCommentChars ("()", "[]") --make sure ( and ) characters do not appear in system text
post.Text (" (Filename: ", fileName, ")\n")
post.Text (" (Post processor: ", postName, ")\n")
post.Text (" (Date: ", date, ")\n")
if(scale == metric) then
post.Text (" G21 (Units: Metric)\n") --metric mode
else
post.Text (" G20 (Units: Inches)\n") --inch mode
end
post.Text (" F1\n G53 G90 G40\n")
minArcSize = 0.2 --arcs smaller than this are converted to moves
firstRef = true
currentZAxis = "Z"

dist = 9999999
lastz = 0
thcstate = 1
ThcOff()
end

function OnNewLine()
post.Text ("N")
post.Number (lineNumber, "0000")
lineNumber = lineNumber + 10
end


function OnFinish()
endZ = safeZ
OnRapid()
endX = 0
endY = 0
offX = 0
offY = 0
offZ = 0
OnRapid()
post.Text (" M05 M30\n")
end

function OnRapid()
if(endX > 1e17 and endY > 1e17) then return end
local len = math.hypot((endX + offX)-currentX , (endY + offY)-currentY)
dist = dist + len
post.ModalText (" G00")
post.ModalNumber (" X", (endX + offX) * scale, "0.0000")
post.ModalNumber (" Y", (endY + offY) * scale, "0.0000")
if(offZ and firstRef == false and currentZ ~= safeZ) then
post.ModalNumber (" " .. currentZAxis, (endZ + offZ) * scale, "0.0000")
end
post.Eol()
end

function OnMove()
local len = math.hypot(endX - currentX , endY - currentY)
dist = dist + len
if(len > slowRadius) then
ThcOn()
end
post.ModalText (" G01")
post.ModalNumber (" X", (endX + offX) * scale, "0.0000")
post.ModalNumber (" Y", (endY + offY) * scale, "0.0000")
if(offZ) then
post.ModalNumber (" " .. currentZAxis, (endZ + offZ) * scale, "0.0000")
end
post.ModalNumber (" F", feedRate * scale, "0.0###")
post.Eol()
end

function OnArc()
local radius = math.hypot(currentX - arcCentreX, currentY - arcCentreY)
dist = dist + radius * math.abs(arcAngle)

if (radius < slowRadius) and (math.abs(arcAngle) > 0.5) then
feed = (radius / slowRadius)
if(feed < slowPercent) then
feed = slowPercent
end
feed = feed * feedRate
ThcOff()
else
feed = feedRate
ThcOn()
end
if(arcAngle <0) then
post.ModalText (" G03")
else
post.ModalText (" G02")
end
post.ModalNumber (" X", (endX + offX) * scale, "0.0000")
post.ModalNumber (" Y", (endY + offY) * scale, "0.0000")
if(offZ) then
post.ModalNumber (" " .. currentZAxis, (endZ + offZ) * scale, "0.0000")
end
post.Text (" I")
post.Number ((arcCentreX - currentX) * scale, "0.0000")
post.Text (" J")
post.Number ((arcCentreY - currentY) * scale, "0.0000")
post.ModalNumber (" F", feed * scale, "0.0###")
post.Eol()
end


function ThcOff()
if(not thcOffCode) then return end
if(thcstate ==1) then
thcstate = 0
post.Text(thcOffCode)
post.Text(" M206(THC off)\n");
end
end

function ThcOn()
if(not thcOnCode) then return end
if(toolClass == "MarkerTool") or tool > 99 then return end
if(thcstate ==0) then
thcstate = 1
post.Text(thcOnCode)
post.Text(" M205(THC on)\n");
return
end
if(thcstate == 2) then
thcstate = 0
end
end


function OnPenDown()
if(toolClass == "MarkerTool") or tool > 99 then
if (firstRef) then
Reference()
post.ModalText (" G00")
post.Text(" Z")
post.Number (safeZ * scale, "0.0000")
post.Eol()
offX = scriberX
offY = scriberY
offZ = scriberZ
post.ModalNumber (" X", (currentX + offX) * scale, "0.0000")
post.ModalNumber (" Y", (currentY + offY) * scale, "0.0000")
post.Eol()
end
if (offZ) then
post.ModalNumber (" " .. currentZAxis, (currentZ + offZ) * scale, "0.0000")
post.Eol()
end
post.Text(" M08 9(spindle on)\n")
else
if(dist >= refDistance) then
dist = 0
Reference();
end
post.ModalText (" G00")
post.Text(" Z")
post.Number (pierceHeight * scale, "0.0000")
post.Eol()
if (preheat > 0) then
post.Text ("\n G04 P")
post.Number (preheat,"0.###")
post.Eol()
end
post.Text ("\n M213\n M03 (torch on)\n")
end
if (pierceDelay > 0) then
post.Text (" G04 P")
post.Number (pierceDelay,"0.###")
post.Eol()
end
-- thcstate = 2 --leave THC off for plunge move
end


function Reference()
firstRef = false
if (refHome) then
post.Text (" G31 F50 Z-50\n")
-- post.ModalText(" G28.1 Z")
-- post.Number(3 * scale, "0.00")
else
post.ModalText(" G31 Z -100")
end
-- post.ModalNumber (" F", refFeed * scale, "0.0###")
--post.Eol()
post.ModalText(" G92 Z0.0\n")
post.ModalText (" G00")
post.Text(" Z")
post.Number (switchOffset * scale, "0.0000")
post.Eol()
post.ModalText(" G92 Z0.0\n")
end

function OnPenUp()
if(tool > 99) then
post.Text(" M09\n")
else
post.Text (" M214\n M05 (torch off)\n")
end
if (endDelay > 0) then
post.Text (" G04 P")
post.Number (endDelay,"0.###")
post.Eol()
end
end


function OnNewOperation()
post.Text (" (Operation: ", operationName, ")\n")
end

function OnToolChange()
if (toolClass == "MarkerTool" or tool > 99 ) then
ThcOff()
if(scriberAxis and scriberAxis ~= currentZAxis) then
endZ = safeZ
OnRapid()
currentZAxis = scriberAxis
end
if(firstRef ~= true) then
offX = scriberX
offY = scriberY
offZ = scriberZ
end
else
if(scriberAxis and scriberAxis == currentZAxis) then
endZ = safeZ
OnRapid()
currentZAxis = "Z"
end
offX = 0
offY = 0
offZ = 0
end
end

function OnNewPart()
post.Text(" (Part: ",partName,")\n");
end

function OnDrill()
OnRapid()
currentX = endX
currentY = endY
OnPenDown()
endZ = drillZ
OnMove()
OnPenUp()
endZ = safeZ
OnRapid()
end


function OnComment()
post.Text(" (",commentText,")\n")
end
Limitless Creations
 
Posts: 2
Joined: Sun Oct 25, 2020 8:38 pm

Re: issue with uccnc locking up

Postby Robertspark » Mon Oct 26, 2020 4:36 pm

what CNCdrive motion controller device are you using?
uc100
uc300eth
uc400eth
axbbe?

what plasma cutter

could it be electrical noise induced by the plasma cutter?
Robertspark
 
Posts: 1775
Joined: Sat Sep 03, 2016 4:27 pm

Re: issue with uccnc locking up

Postby Limitless Creations » Mon Oct 26, 2020 4:55 pm

UC100

its too consistent to be noise from the plasma.

its an Everlast 60s
Limitless Creations
 
Posts: 2
Joined: Sun Oct 25, 2020 8:38 pm

Re: issue with uccnc locking up

Postby Robertspark » Mon Oct 26, 2020 7:09 pm

I think it will be noise or a ground loop issue (YMMV).

the UC100 is USB and USB+plasma I don't think always like each other, again YMMV

https://www.everlastgenerators.com/site ... 202013.pdf

Your plasma cutter looks like it uses blowback start (which is great), but I presume that the pilot-arc setting is on "normal" and not enabled..... given this will probably not help your USB communications....

I have never tried it, but you may benefit from adding a USB filter device which the audio specialists use to allow for noise immunity with USB communications (it may work.... it may not.....) but for the sake of £36 I'd give it a go....

https://wiki.ezvid.com/best-usb-filters

https://shop.pimoroni.com/products/adaf ... n=shopping

Ethernet tends to be the recommended route for plasma given it has better noise immunity.
Robertspark
 
Posts: 1775
Joined: Sat Sep 03, 2016 4:27 pm


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