Maxnc15CL Motor timing help

  • nicklego
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31 Jan 2026 21:27 - 01 Feb 2026 18:45 #342264 by nicklego
Maxnc15CL Motor timing help was created by nicklego
Hi, I'm very new to CNC, and I have a Maxnc15CL from around the year 2000 and am using a Raspberry Pi 5 to communicate with it using LinuxCNC. The Pi 5 has a parallel port hat from Byte 2 Bot, and I'm able to control the spindle, detect the limit switches, enable the motor encoder feedback loop, and make the motors make noise when I tell the axis to move. I suspect that the motor timing is off, but im not too sure if when I change the values, if it's getting closer or further away from actually moving. If anyone has any ideas on how to make this work, I would greatly appreciate it, and im leaving my hal file and .ini file below. Thank you 

File Attachment:

File Name: V3Maxnc_20...1-31.hal
File Size:9 KB

File Attachment:

File Name: V3Maxnc_20...1-31.ini
File Size:3 KB
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Last edit: 01 Feb 2026 18:45 by nicklego.

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  • Todd Zuercher
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02 Feb 2026 12:49 #342313 by Todd Zuercher
Replied by Todd Zuercher on topic Maxnc15CL Motor timing help
Don't rule out the possibility that there are electrical issues with the stepper motors/drives. A bad connection between the motor and drive can often cause problems or even kill a drive. Also make sure that the screws turn freely without any binding. Start with slow accelerations and max velocities and longer step timings increasing until you find the limits of the machine, then reduce to give you a safety margin.

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