I get ALARM 3, when i am in the middle of the program.
If I restart it has the same error, but not always at the same position.
I found a lot of ALARM3 Topics, but none on a running program.
I have the iKier 70W with the extension kit and home in bottom right corner, everything else is standard.
Here the error log:
ok Stream wird gestartet Layer C00 ALARM:3 In Bewegung zurücksetzen. Grbl kann die Position nicht garantieren. Verlorene Schritte sind wahrscheinlich. Die Rückkehr zur Ausgangsposition wird dringend empfohlen. Auf oder in der Nähe der Linie 0: Job angehalten Stream fertiggestellt in 1:28 ALARM:3 In Bewegung zurücksetzen. Grbl kann die Position nicht garantieren. Verlorene Schritte sind wahrscheinlich. Die Rückkehr zur Ausgangsposition wird dringend empfohlen. ok Grbl 1.1h [‘$’ for help] [MSG:‘$H’|‘$X’ to unlock]
or, often, the computer losing connection to the machine. […]. See Connection Troubleshooting for help if this happens repeatedly.
Most likely, the machine has a USB glitch disrupting the connection, so follow the troubleshooting steps at the link. A new USB cable with ferrite cores at each end seems to be good first step.
Hi @ednisley thanks for the reply.
Will try, but it also seems to be related to the design. Ran another design (20min cuttime) before without a problem.
As I am writing, it comes to my mind that the difference in the two designs is that the one with issues is more curvey and the ok one has more straight lines. Is that something that could play a role?
Not at all: they’re just coordinates at the G-Code level.
Nobody wants to believe the USB cable supplied with the machine is junk, but replacing it with a known-good high-quality cable can avoid weeks of trying everything else.
There are other causes of USB problems and communication glitches (as mentioned in the links), but a new cable is a relatively inexpensive (just don’t get the cheapest one on Amazon) first step. If that doesn’t solve the problem, there are other things to try.
I really can not understand the logic of most laser manufacturers, even their bean counters must realise it is cheaper to provide a higher quality USB cable Vs the cost of support calls generated by “my laser does not connect”/“my laser loses connection”. Cheap USB cables are very susseptable to EMI particularly from Flouresent lighting.
Based on what I read around here, support costs are minimal. Agents are measured / rewarded based on calls per day, there’s no response time spec, and definitely no “getting it right” verification. Many customers seem to wash ashore here after giving up on (or finding no) support from the seller.
In contrast, a USB cable is a recurring cost of each unit shipped, so picking the cheapest one that doesn’t fall apart makes perfect bottom line sense.
“Customer support” is a different part of the organization, which means reducing support costs is definitely not manufacturing’s problem.
Color me overly cynical, but it explains nearly all of the observed facts and contradicts very few.
Agreed But I would expect the bean counter looking at customer support would report back to designers/engineers that overall costs could be made by upgrading cable. Or is my handicap of Logic and too much common sense showing through ?
