Feedback on BDI Parallel Port Set-up

Hi all,

As promised here is some feedback on my struggle to get EMC up and running.

I have eventually succeeded in getting Linux to detect my parallel port. I
have downloaded a document called parport.txt from http://www.linuxhq.com
which explains a bit more about setting up parallel ports in linux.

I then proceeded to run EMC, but could not get it out of e-stop. Eventually
I noticed that if I set both the limit switch polarities to 1, I get an
error message "minimum hardware limit exceeded". If I however set both the
values to 0, I get a message "maximum hardware limit exceeded". I then set
the minimum limit polarity to 0 and the maximum limit polarity to 1 and that
enabled me to get out of e-stop.

The above happens when the .ini setting for the parallel port is set to 378,
which is the same as set-up in the bios and as detected by linux. If I
however change the address to 278 (which does not exist on my machine), I
get out of e-stop by having both limit switch polarities set to 0. I
therefore make the deduction that the problem is caused by my parallel port
set-up.

I don't know enough about parallel ports (yet) to proceed further with the
faultfinding. Any comments or suggestions?

Deon Styger.





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