pleaase if some ne matt such streng proble
i have machine with 6 axiss( not sioltanic)
but with c and z there very strenge beheviour
if i move by jog all ok
but if i move by comand the z axiss
c also move and even give me alarm over soft max
what can be?
this 2 axiss are not master slave not any conection

Hi,
try an explicit command like:

g0 z10 c0
g0 z0  c0

I'm wondering if the Gcode interpreter requires a specific C coordinate.

Craig

tanks alot ill try
have any ide why its shuld act like that?
i use version 4.2.0.479

i test in my laptop  i found very strage behevior when motors are sighn as reverse
when you try move by command its move other motors or change direction...is it bug that some one know or talked before?

craig
its help but i cant always be sure all nc file customer use will have all axess movment
in my pp i can control and add,but in other??

Hi,

its help but i cant always be sure all nc file customer use will have all axess movment
in my pp i can control and add,but in other??

No I don't think you can stop it by programming Mach, I suspect its a shared issue between Machs trajectory planner and your motion controller.

The only time I have observed it is when an un-commanded or referenced axis's Direction signal will change state, but even if it does change state who cares,
the axis will not shift UNLESS there is also a Step signal.

What I found was that Machs output, being essentially numeric is active high. If however your motion controller output or BoB output is naturally active
low then an un-commanded move MAY OCCASIONALLY STILL experience a change of state. I found that if I reversed the active high/active low circuit arrangement without reversing
the direction of the motor that the natural state of the motion controller/BoB output matches the un-commanded state of Mach the issue largely disappeared.

Craig

change of state from minus to plus i also had ,but i think i solved it when put all motors in plus direction(uncheack the reverse cheack box)
and change direction when need only in servo drive
i have some point to agree with you (but not sure 100%)that its some thing with pokeys and mach because i didnt see such in my laptop
that its work only simulation
i saw this only when connect real pokeys card
but still i cant be sure and its big problem ,that axiss move without any command
in some cases i even get over soft max error on the axiss i didn't command ,for example when c its on "00" and its got that bug comand
in  minus ,i got c over max (c its like z "0" is max)even i didn't comand it at all
thanks

now i got deaper problem
the axses move even without any axes command ,only by start spindle rotate then axis move ,its totally crazy
is some one from mach can give support???
sorry cant upload here mp4 but any one want see i have video

Hi,
electrical noise.

Craig

Sure 100% not electric noise
Because as i told ,the axiss move by mach,you can see the comand to move ,the numbers move( about 1mm) its real move not loose position ,all corect ,but no one ask it to move
Its total bag only bag ,i don't know if its on pockey side or mach side but this bag sure 100% not noise