Category: QtPyVCP
Firstly, I have a PM728vt, using a MESA 7i96S.
Ok, so through some trial and error I have come up with the following for homing, and it is working correctly (i.e. zero out home etc..), however, I have two questions. The one relating to the bottom set of config elements:
These are the current config and are working and displaying on the correct orientation on Main on Probe-Basic. (i.e. tool path direction).
[JOINT_0]
MIN_LIMIT = -480
MAX_LIMIT = 0
MAX_VELOCITY = 10
MAX_ACCELERATION = 4
TYPE = LINEAR
SCALE = 320
HOME = 0
HOME_OFFSET = 1
HOME_SEARCH_VEL = 4
HOME_LATCH_VEL = -1
HOME_FINAL_VEL = 1
HOME_SEQUENCE = 0
[JOINT_1]
MIN_LIMIT = -180
MAX_LIMIT = 0
MAX_VELOCITY = 10
MAX_ACCELERATION = 4
TYPE = LINEAR
SCALE = -320
HOME = 0
HOME_OFFSET = 1
HOME_SEARCH_VEL = 4
HOME_LATCH_VEL = -1
HOME_FINAL_VEL = 1
HOME_SEQUENCE = 1
[JOINT_2]
MIN_LIMIT = -172
MAX_LIMIT = 0
MAX_VELOCITY = 10
MAX_ACCELERATION = 4
TYPE = LINEAR
SCALE = 320
HOME = 0
HOME_OFFSET = 1
HOME_SEARCH_VEL = 4
HOME_LATCH_VEL = -1
HOME_FINAL_VEL = 1
HOME_SEQUENCE = 2
At present it homes and just offsets by 1mm to create 0 home. So machine is sitting in the Right (x), Front (y), Up (z) sections of the machine. What I would like to do is home to the centre of the machine and wanted to know if there was a convention for the limits setup. In other words, should it go from say an example of -150 through 0 to +150, or is convention, 0 to 300.
I feel that I would like to "centre" the machine after homing and wanted to check if the following changes would provide for this. And is this best practice?
[JOINT_0]
MIN_LIMIT = -240
MAX_LIMIT = 240
HOME_OFFSET = 240
[JOINT_1]
MIN_LIMIT = -90
MAX_LIMIT = 90
HOME_OFFSET = 90
[JOINT_2]
MIN_LIMIT = -86
MAX_LIMIT = 86
HOME_OFFSET = 86
The second question is that I have limit switch for the other end of travel, and wanted to know how I can configure the home switch to be both Home and limit without causing errors. I have not been able to get it working as a combination switch, but would like it to function that way.
Once this is done, will be configuring up the Probe and a tool touch off.
Any help welcome. Thanks.
