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#1 2017-11-23 02:58:17

qingquan
Member
Registered: 2017-10-19
Posts: 22

The Z axis is inconsistent in the process of rising and falling

The Z axis is inconsistent in the process of rising and falling
In "Z Axis Control" of the Z Axis is on the rise, display the pulse value is an integer, and falling time of pulse number is decimal, and than a rise in pulse and distance (mm) is more, such as:
Z axis increase 1 mm, shown in the "Current" Millimeter = 121.214996, Pulse = 48486,
Z axis fell by 1 mm, shown in the "Current" Millimeter = 120.217003, Pulse = 48087,
400 per mm should be Pulse
Why is that?

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#2 2017-11-23 06:59:30

Shahin
Administrator
Registered: 2016-02-17
Posts: 1,834

Re: The Z axis is inconsistent in the process of rising and falling

Are you relying on RAMPS or direct control?
For the both, nanodlp uses pulses to keep distances. The pulse is the smallest unit of movement for stepper motors so we could not have decimal values.

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#3 2017-11-24 00:16:20

qingquan
Member
Registered: 2017-10-19
Posts: 22

Re: The Z axis is inconsistent in the process of rising and falling

I only use ramps, which should be able to use GCODE code (such as G1 Z* *) when controlling step motors, so that control is more accurate?
In addition, the increase of 1mm is 400 pulses through the pulse, and the 1mm is reduced to a 401 pulse, which can cause errors in the sum. What is the cause of this?

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#4 2017-11-24 00:22:48

qingquan
Member
Registered: 2017-10-19
Posts: 22

Re: The Z axis is inconsistent in the process of rising and falling

How is the Gcode code in the "Manual Movement Gcode Template" used in the "Setup" page to be used? If it has to do with the z-axis Movement I mentioned?

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