It's turning out that getting my carousel to move is going to be the easiest part. One of the features I'm trying to build is to use my MPG to jog the carousel to manually set home and load the pockets. If I replace my encoder with another that has an index, I could have EMC2 find home automatically. Once home is set, I could load the pockets by selecting a pocket number, but I thought MPG jogging should not be that hard to do. Here is how I have HAL setup: http://www.wallacecompany.com/machine_shop/Shizuoka/shizuoka_hal_ov-1b.png http://www.wallacecompany.com/machine_shop/Shizuoka/Shizuoka_HAL_OV-1b.svg http://www.wallacecompany.com/machine_shop/Shizuoka/100_1127-1a.JPG http://www.wallacecompany.com/machine_shop/Shizuoka/100_1136-1a.jpg
I have some pyvcp buttons to select what the MPG connects to, none, axes or carousel, another button to set home by resetting to 0 the MPG and carousel encoder counters, and a button to disable the carousel amp for testing. One problem I'm trying to address is when I select none, axes, or carousel, the carousel moves because the carousel position command source changes. One fix is to sense the carousel enable rising edge and copy the current position to the MPG counter offset so that both match. The problem here is that different parts of the system take affect over time after sensing the pyvcp carousel select button press. The PID sees a position change and moves during the counter synchronization. Has anyone done something similar to this and worked out a solution, it seems the axes jog inputs don't have this problem, or should I just write a custom carousel component? Another problem is that the carousel will occasionally move on its own, which seems to indicate that the pyvcp button state may be seen by edge as mostly on or off even when the button is not changed by the user. Has anyone seen this happen? -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ The demand for IT networking professionals continues to grow, and the demand for specialized networking skills is growing even more rapidly. Take a complimentary Learning@Cisco Self-Assessment and learn about Cisco certifications, training, and career opportunities. http://p.sf.net/sfu/cisco-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
