Hi,
I work with Marlin 2.0 bugfix on lpc1768 and found some strange behavior of enstops.
Axis X with two endstops. Let's say, Initial position 0, endstops are at -5.0 and +5.0
Home not found.
//Endstop Settings
#define USE_XMIN_PLUG
#define USE_XMAX_PLUG
// Travel limits (mm) after homing, corresponding to endstop positions.
#define X_MIN_POS 0
#define X_MAX_POS 250
//#define MIN_SOFTWARE_ENDSTOPS
//#define MAX_SOFTWARE_ENDSTOPS
//Configuration_adv.h
//#define ENDSTOPS_ALWAYS_ON_DEFAULT
float current_position[XYZE] defined at \module\motion.cpp and reported with M114 command
current_position[0] stepper.position(0)
initial 0 0
G90
G1 X1 1.0 1600
G1 X2 2.0 3200
G1 X5 5.0 8000
G1 X6 6.0 8004 echo:endstops hit: X:5.00 (2 messages)
G1 X5 5.0 6404
G1 X0 0.0 -1594
G1 X10 10.0 8002 echo:endstops hit: X:5.00 (4 messages) //wrong position (should be 5.0)
G1 X7 7.0 3202
G1 X8 8.0 4802
G1 X20 20.0 8004 echo:endstops hit: X:5.00 (2 messages) //wrong position (should be 5.0)
G28 X 0.0 0
(without ENDSTOPS_ALWAYS_ON_DEFAULT)
G1 X100 100.0 160000 //not seen endstop and convulsions at real axis stop
G1 X-100 -100.0 -160000 //not seen endstop and convulsions at real axis stop
(with ENDSTOPS_ALWAYS_ON_DEFAULT)
G1 X100 100.0 8004 echo:endstops hit: X:5.00 (2 messages) // seen endstop, but show wrong position
current_position does not changes at move time.
So the questions is
1) what is current position with endstops and where is instant current position at time of movement?
2) how to use endstops after homing?
UPDATE: answer: - use ENDSTOPS_ALWAYS_ON_DEFAULT
Edited 1 time(s). Last edit at 02/08/2018 08:32AM by evgen.
