Messages

1

General Mach Discussion / Re: gcode subprograms

« on: April 03, 2023, 05:25:54 PM »

hi moxy
please explain more.
steping means single block mode? hangs? 

2

General Mach Discussion / mach3 save last line on sudden power outage

« on: April 03, 2023, 05:09:44 PM »

Hello
By using this screen, you can have the last line and offset on a sudden power outage. Not compatible with subprogram m98.
Please introduce if you know another method.
Thanks

3

General Mach Discussion / Re: homing rotating axis

« on: April 30, 2022, 05:21:44 AM »

finaly i use mcode to solve mkx g28.1 problem. after use g28.1 ... the gcode go to first line. you must use mcode to set line and start again.


code "g28.1 A0"
while (ismoving())
sleep 1000
wend
setdro(16, xx) ' xx is line number
dooembutton(156)' set next line
dobutton(0)'start

4

General Mach Discussion / Re: Homing acceleration in mach3

« on: April 24, 2022, 12:36:01 AM »

Hi JohnHaine
I repeat test on another mach3 machine with lpt board (mach3 parallel). After the switch is activated, the axis acceleration is very smooth to stop.
first test on china mach3 board that have plugin for connect to board (mkx-et). its not standard mach board.
sorry for incorrect information in first.
thanks

5

General Mach Discussion / Re: Homing acceleration in mach3

« on: April 24, 2022, 12:09:13 AM »

Have you tried changing the homing speed setting?

Yes sure

6

General Mach Discussion / Re: Homing acceleration in mach3

« on: April 23, 2022, 08:12:02 AM »

I think this multiplier works on both the homing speed and acceleration.

I do not think homing acceleration is a percentage of acceleration axis. Based on what happens and is seen with the eye!

Usually there should be a slight overrun possible on the home switch so the overrun doesn't cause lost steps.   

It can set zero the machin cordinate as soon as the microswitch is activated then slow down at the deceleration. it cause a difference between home switch point  and stopping point. This is not a problem. This will not cause the microswitch to break. This could be selectable.
thanks

7

General Mach Discussion / Re: mkx-et problem

« on: April 23, 2022, 04:50:41 AM »

There seems to be no support for china mkx-et.
when g28.1 or referencing on gcode , the gcode start from first.
may be from plugin ...

8

General Mach Discussion / Re: Homing acceleration in mach3

« on: April 23, 2022, 04:43:59 AM »

when I set axis acceleration  to low value for example 80 mm/s2  ,  jog moving is very smooth.  but when do homing the axis stopping hard...
Due to very low acceleration, it is visible to the eye!

9

General Mach Discussion / Re: homing rotating axis

« on: April 23, 2022, 03:27:08 AM »

Hi Graham Waterworth
I thinks your reply solve my problem. thanks very much
but I must use g28.1 to return to home.
g28 just move axis to machin zero (No matter the microswitches). g28.1 move axis until home switch activated and the zero machin position.
thanks and regards

10

General Mach Discussion / Re: Homing acceleration in mach3

« on: April 23, 2022, 03:20:23 AM »

Since the point of homing is to find the limit switch and the machine doesn't know where that is, deceleration is not possible only a hard stop.  The homing speed is usually set to a few percent of the normal jog speed to minimise the overrun.

Hi JohnHaine
You are right. hard stop Avoid crash axis and improve position error.
but beter is home stop acceleration should be selectable.
thanks and regards