I have these settings (this is directly from the console read-out):
$zfm = 20 mm/min
$zfr = 20 mm/min
But when I do things like G0Z50 (from a Z=0 starting point), the machine tries to go way too fast for that speed limit and the z axis stalls.
The machine is set to mm units
The reason zvm and zfr are set so low is that I keep trying to reduce them and it doesn't make any difference. The actual speed limit for that axis is above 800 mm/min
I've tried resetting, hoping it would re-load the parameters, but there isn't any difference in behavior.
This sounds like it will be an Alden item (he is traveling) but a couple questions to help him diagnose:
You said:"....The actual speed limit for that axis is above 800 mm/min",
Do you mean that the physical machine can do this, or there is some other setting that says 800 mm/min is OK?
Does your Z axis seem to be following your 20 mm/min setting when you use a G1 move, e.g. G1Z50 ?
I'll assume you have an F xxx (xxx> 20) set already.
Interesting, I don't recall this behavior on G1 moves last I ran my machine (ShapeOkO2) a couple weeks back.
Can you report what Hardware version of tinyG you have, what FW build is loaded, and what tgFX (I assume that is what you meant by 'console') build you are running.
For example, my tinyG V7 is currently loaded with FW build 412.01, and I am running tgFX build 3256, found here:
I just tried running tgFX, but it claimed it couldn't find my TinyG and asked if I wanted to install new firmware. I'm not enthused by that, as my firmware is supposed to be up to date for that version (412.01) and the fact that it will blow away all my parameters. The older versions of the tgFX don't find my TinyG either.
JRDM - I experience the same thing with my tinyG in that tgFX does not find my tinyG and I have to cut power to it to reset it and then tgFX finds it ok after that and I do not loose any parameters.
The G0 maximum rate is set by the velocity max. So for Z it's $zvm=xxxx.
If the machine is going too fast it may also be your motor parameters and other settings. Are you sure the motors steps, travel per revolution and other settings are correct?