Delta G2s - G28 moves carrage down not up

[prb]

I'm having difficulty with a Delta Rostack G2s. G28 causes movement in the z direction downward. The probe does not stop the movement when it reaches the print platform and an Emergency Stop is required. M119 with X, Y, and Z endstops not activated and the probe down returns:

> 8:37:10 PM: N556 M119 *12
< 8:37:10 PM: Reporting endstop status
< 8:37:10 PM: x_max: open
< 8:37:10 PM: y_max: open
< 8:37:10 PM: z_min: open
< 8:37:10 PM: z_max: open

with X, Y, and Z endstops activated and the probe locked up, M119 produces:

> 8:38:27 PM: N628 M119 *6
< 8:38:27 PM: Reporting endstop status
< 8:38:27 PM: x_max: TRIGGERED
< 8:38:27 PM: y_max: TRIGGERED
< 8:38:27 PM: z_min: TRIGGERED
< 8:38:27 PM: z_max: TRIGGERED

From the information provided in the WIKI, this seems correct, though it did require connecting the probe endstop normally closed rather than normally open.

Is this correct? Other ideas for me to try?

[zhangxueyou]

Plese refer to this wiki page to calibrate your printer after assembly:
http://www.geeetech.com/wiki/index.php/ ... erify_code

[divtec]

I'm having the same problem. In fact it appears that all axis X, Y, Z moves reversed. I noticed I received my printer about the same time... end of June 2015 maybe an indication.

[Sherry]

please reburn the firmware and tell me the result.

[prb]

divtec,

I was able to resolve my direction problem by modifying the INVERT_?_DIR settings in Configuration.h as follows:

//#define INVERT_X_DIR true // for Mendel set to false, for Orca set to true
#define INVERT_X_DIR false // for Mendel set to false, for Orca set to true
//#define INVERT_Y_DIR true // for Mendel set to true, for Orca set to false
#define INVERT_Y_DIR false // for Mendel set to true, for Orca set to false
//#define INVERT_Z_DIR true // for Mendel set to false, for Orca set to true
#define INVERT_Z_DIR false // for Mendel set to false, for Orca set to true
//#define INVERT_E0_DIR true // for direct drive extruder v9 set to true, for geared extruder set to false
#define INVERT_E0_DIR false // for direct drive extruder v9 set to true, for geared extruder set to false
#define INVERT_E1_DIR false // for direct drive extruder v9 set to true, for geared extruder set to false
#define INVERT_E2_DIR false // for direct drive extruder v9 set to true, for geared extruder set to false

The firmware version offered in this thread retains the previous settings, so it seems likely that both of us have some other condition that is creating this problem. I haven't tried loading the firmware version offered, but I would be interested to know if it somehow fixes the problem as well. Maybe there is another setting somewhere within that corrects the direction.

On another note, please refer to this discussion: http://www.geeetech.com/forum/viewtopic ... 22&t=16522. I experienced this issue and found aaronherrick's comments and suggested fix to be helpful.