after home sequence y axis DRO displays not zero.

I'v installed physical home switches(those are limit switch also)
after home sequence x and z axis' DRO display 0.0 except y axis DRO.
y axis DRO display 100.0 always. I didn't change any other thing except basic configuration..
I don' know where is the value or setting for change this to 0.
Could you tell me how can I correct it?

thanks,
Byoungil Choi

Hi

If you press the hash (#) key, all your dro's should show zero.

Homing is done to machine position G53, but by default the dro's show G54 position.
It just means that your Y axis is 100mm from where you touched off at zero under G54
If you want it to be the same just touch off Y to 0 under G54.

The concept of co-ordinate systems takes a bit to get your head around.

Once you get used to touching off to the workpiece and just using home as a safe place for toolchanges or ending a program, it will become clearer

regards

Found the # to clear the DRO. Machine still won't jog off of home position

So.... for those of you who like me, don't have a clue what you're doing in setting up your home axis's in the .ini file. After walking around the mountain for hours... I finally got the machine set up and it works great.

Here are my settings for having the home switches in the back right corner of a cnc router. Switches are N/C

[AXIS_X]
MAX_VELOCITY = 150.0
MAX_ACCELERATION = 200
MIN_LIMIT = -1117
MAX_LIMIT = 0.001

[JOINT_0]
TYPE = LINEAR
HOME = -12.0
MIN_LIMIT = -1117
MAX_LIMIT 0.001
MAX_VELOCITY = 200
MAX_ACCELERATION = 200
STEPGEN_MAXACCEL = 220
SCALE = 80.0
FERROR = 1
MIN_FERROR = 0.25
HOME_OFFSET = 0.00
HOME_SEARCH_VEL = -30
HOME_LATCH_VEL = 5
HOME_SEQUENCE = 1

#HOME_SEARCH_VEL = 0
#HOME_LATCH_VEL = 0
#HOME_USE_INDEX = NO
#HOME_SEQUENCE = 2

#The 8 commands above this line are used for initial setup. LinuxCNC wants to home the axis before use. To bypass this and have axis move on their own,
#leave it as is. During normal machine operation, uncomment the top 4 commands and either delete or comment out the bottom 4 commands. This is also talked
#about in the LinuxCNC forum post I linked.

[AXIS_Y]
MAX_VELOCITY = 150.0
MAX_ACCELERATION = 200
MIN_LIMIT = -838.0
MAX_LIMIT = 0.001

[JOINT_1]
TYPE = LINEAR
HOME = -12.0
MIN_LIMIT = -838.0
MAX_LIMIT = 0.001
MAX_VELOCITY = 200
MAX_ACCELERATION = 200
STEPGEN_MAXACCEL = 220
SCALE = -80.0
FERROR = 1
MIN_FERROR = 0.25
HOME_OFFSET = 0.00
HOME_SEARCH_VEL = -30
HOME_LATCH_VEL = 5
HOME_SEQUENCE = -1

#HOME_SEARCH_VEL = 0
#HOME_LATCH_VEL = 0
#HOME_USE_INDEX = NO
#HOME_SEQUENCE = -1

[JOINT_2]
TYPE = LINEAR
HOME = -12.0
MIN_LIMIT = -838.0
MAX_LIMIT = 0.001
MAX_VELOCITY = 200
MAX_ACCELERATION = 200
STEPGEN_MAXACCEL = 220
SCALE = -80.0
FERROR = 1
MIN_FERROR = 0.25
HOME_OFFSET = 0.00
HOME_SEARCH_VEL = -30
HOME_LATCH_VEL = 5
HOME_SEQUENCE = -1

#HOME_SEARCH_VEL = 0
#HOME_LATCH_VEL = 0
#HOME_USE_INDEX = NO
#HOME_SEQUENCE = -1

[AXIS_Z]
MAX_VELOCITY = 50.0
MAX_ACCELERATION = 100
MIN_LIMIT = -150
MAX_LIMIT = 0.001

[JOINT_3]
TYPE = LINEAR
HOME = -12
MIN_LIMIT = -150
MAX_LIMIT = 0.001
MAX_VELOCITY = 60.0
MAX_ACCELERATION = 100
STEPGEN_MAXACCEL = 220
SCALE = 200
FERROR = 1
MIN_FERROR = 0.25
HOME_OFFSET = 0.000000
HOME_SEARCH_VEL = -15
HOME_LATCH_VEL = 5
HOME_SEQUENCE = 0

#HOME_SEARCH_VEL = 0
#HOME_LATCH_VEL = 0
#HOME_USE_INDEX = NO
#HOME_SEQUENCE = 0

Also the Z home switch is at the top of the travel

Hope this helps someone