Quote from erwan on 23 April 2025, 18:00

To the best of my knowledge, neither Mach3 or SimCNC supports RTCP (Rotation Tool Center Point), unless I'm mistaken. Also, the Fusion post-processor is limited to 4 axes for simcnc.

Quote from goebel-dieter on 23 April 2025, 19:00

Hello, I have extended the postprocessor to 5 axes, 3+2 axes work.

Quote from CS-Lab Support on 28 April 2025, 13:29

Quote from goebel-dieter on 23 April 2025, 17:30

Hello,

Can I control 5-axis simultaneous machining with the IP-S and simCNC?

Controlling the axes in 3+1 or 3+2 mode works perfectly! However, when trying 4- or 5-axis simultaneous movements, the axes do move simultaneously, but the result is inaccurate.

As far as I know, 4- or 5-axis simultaneous machining requires the G-codes G12.1 and G43.4, but these do not seem to be supported.


What options do I have?


Is true 5-axis simultaneous control possible with Mach3 or Mach4?

Thank you for your help.

Unfortunately, I don't have a 4- or 5-axis machine for testing. However, I do know that some of our customers use simCNC and CSMIO/IP controllers in 5-axis applications. Simultaneous 5-axis interpolation is supported, but without RTCP, so the G-code must be generated with the tool length taken into account. I’m not sure which CAM software or postprocessor they use.

Polar mode is not supported.

Quote from custom2 on 30 May 2025, 20:46

Hi there 

To add to the Original question. Does the toolpath display in simCNC give a decent 4th Axis toolpath display for a sanity check and verification. I have tried various 4th Axis toolpaths and cant get it to display correctly. Makes one scared to try to machine the toolpath.

Im in the process of switching from the Mach3 plugin to simCNC. Using the mach3 Plugin the tollpath display was pretty decent.
Any advice would be appreciated.

Regards

Deon Gerber