Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: JeremyLambert on July 05, 2019, 04:26:52 PM
-
Hello, I come to you because I have a problem and I think it's problably due to my Mach3 configuration. When I start a plasma cutting, the plasma start and stay a moment at the same place before cutting, and it stop before the end of the cutting. I have already set my 4 parameters for Dwell in "Spindle setup" at 0, but nothing change. I think my GCODE is ok, but I let you invoice, just in case.
Thank you !
-
there is a G04 in your GCode witch causes the delay
...
Z1
Z0
M3
G4P1
G3X-0.8I-1.3J-50.4F2000
...
-
Thanks for your answer, I've tried to delete all G4P1, the cycle is smallest but I have always this lag. For example, the ignition start between 500ms and 1s before the torch moving, and the plasma stop before the end of the move. As if we have a time lag, in advance to the movement
PS : Sorry if my English is bad
-
The M3 / M5 command set have an inherent delay. To overcome this issue the M11Px / M10Px command set was introduced, initially for Laser control but it is now commonly used with Plasma (it only switches the output pin (Output#) at the instant of axis movement). There are a few more details here; http://hobbycncart.com/publ/cikkek/mach3_temaju_cikkek/switching_a_laser_under_mach_control/8-1-0-29
Assuming you are using the PC’s LPT Parallel Port or a motion controller that supports the M11/M10 command set then…
If you determine which Output# you are using to switch your torch ON / OFF then you can replace all M3 commands with M11Px and M4 commands with M10Px (where x = the Output# mentioned earlier).
Tweakie.
-
if your run in Plasma mode with THC on, it will allways wait until torch on Signal Shows up.
-
Hello, thank you for your answers, I come with some (bad) news
I've tried the M11P1/M10P1 but nothing happened, maybe my controller card is not suitable for this command ? I have a NVEM V2 ethernet controller
Maybe I have to configure Mach3 differently with these commands ?
I don't have the THC with my plasma so the option is disabled
I've also tried to play with the delay in Spindle options but I don't understand how the delay "CW Spindle DOWN" work, I thought I can play with it to delay the stopping of the plasma but nothing happened, the plasma stop earlier than I want
Many thank for your help
-
Hi,
I have a NVEM V2 ethernet controller
Maybe I have to configure Mach3 differently with these commands ?
No, unfortunately that controller does not support those commands, there is no workaround or manipulation you can
do in Mach3 that will make that controller support those commands. It is a known and recurring issue that Chinese controllers
that, at best, support a subset of Mach commands, in this case not including M10, M11.
You either revert to a parallel port, assuming you have a Windows 7 or earlier 32bit PC or get a decent US or European
motion controller like an Ethernet SmoothStepper, a UC300 or a 57CNC.
Craig
-
Hi Jeremy,
Unfortunately Novusun is one of the businesses listed in our Hall of Shame for Mach3 Licence violation. As a result this forum does not support assistance with any of it's products unless you are a genuine Mach3 or Mach4 license holder.
This thread referrers; https://www.machsupport.com/forum/index.php?topic=24331.msg238650#msg238650
Tweakie.
-
Hi,
so not only does the controller not work but they are quite content to peddle pirate copies of Mach?
The Chinese must love us......'look the stupid white man buys our s*********ty stuff and we get away with it'.
Craig
-
Alright I understand, I've choose this one because I have interferences with my older one, probably due to the USB connection
So let's choose a new controller !
Thank for your help
-
Hi,
the three I listed are all Ethernet connected so you should get at least the same noise immunity that the Novosun
board gives you.
Craig
-
Hi,
all three have both Mach3 plugins AND mach4 plugins. Thus if you wished to upgrade you can do so.
All three in Mach3 have complete plugins including support for M10/M11 but also THC, which no doubt will interest you
if doing Plasma.
The UC300 has the potential for two analogue inputs, the 57CNC has up to six (from memory) analogue inputs whereas
the Ethernet SmoothStepper (ESS) has no analogue inputs. On the other hand the UC300 and 57CNC have max pulse rates
of 100k and 125k respectively whereas the ESS is way faster at 4MHz.
Really when operating with Mach3 despite some differences all three are good and similar in performance in practice.
The situation is different when operating with Mach4. The different controllers have differing and in some cases incomplete
Mach4 plugins.
The ESS has recently released a realtime THC function that both the UC300 and 57CNC lack. The ESS is only one of two
Mach4 motion controllers that has a realtime THC function, the other being the Hicon Integra. The Hicon with THC activated
is quite a bit more expensive at around $800. In fact the ESS has additional realtime supports including lathe threading,
laser rastering, spindle PID and backlash compensation. That makes the ESS the most complete (at the current time.....how long
that is true remains to be seen) of all the Mach4 capable controllers.
The most recent build of Mach4 has a script based THC function. Because it is a software solution it is nowhere near as
fast as either the Hicon or ESS THC functions; both being hardware enacted realtime; none the less NFS are of the opinion
that the closed loop bandwidth of the script solution is fast enough to be useful in all but the most demanding THC situations.
Depending on your speed-of-response THC demands then you may not deem it necessary for a motion controller to have realtime
THC. Should that be your determination the slightly cheaper UC300 and 57CNC come back into contention.
Craig
-
Hey, many thanks for the propositions and the detailling !