Hi all,

After reading (and (for the most part) understanding) the integrator's 
manual, I have come up with the following plan for constructing and 
controlling a custom toolchanger.  The changer will use three steppers, 
one to spin a carousel of sorts and two to operate a scara-type arm to 
place tools from the changer somewhere that they can be taken up by the 
spindle.

1.  obtain and set up a second pc running EMC2
2.  connect the mill's pc and the toolchanger's pc via ethernet cable
3.  determine the correct NML messages needed to carry out the steps for 
a toolchange
4.  add a button/code to AXIS using pyVCP to generate these messages
5.  figure out how to send the messages by connecting the button to the 
parport with HAL
 
Pretty simple, right?   My rationale for this somewhat convoluted 
sequence of events is that I think I can get all that going with what I 
already know how to do with HAL etc. 

Based on my reading of the manual, it's going to take a good while 
before I can get pull it off with straight HAL/ClassicLadder objects.   
I'm going to work on that at the same time, so I'll probably get it to 
work the "right" way at some point.

Comments?

Thanks,
Pat

ps - It often occurs to me when I'm generating these posts that a twenty 
minute conversation with one of you EMC gurus would be worth about a 
month of back-and-forth on the list.  Unfortunately, the NAMES show 
happens right in the middle of exam week for me, so that's a little 
tough.  If anybody would be willing to try a brief phone conference 
please email me privately...!

 
....................
Patrick Ferrick
Town of Webb School
Main Street
Old Forge, NY  13420

(315) 369-3222
(315) 369-6216
....................


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