Re: RE: Parport problem(s)

[Ray <rehenry-at-up.net>]

Tim and Coen

I've got a second parport here so tried the bridgeporttask and bridgeportio
combination.  I defined the second parport as 0x278 and the stepper output
as 0x378.

With all of the relevant ini as in generic, I found that it would come out
of e-stop here because the 

ESTOP_SENSE_POLARITY = 0 

tells the software to look for an open pin 13

When I changed the polarity to

ESTOP_SENSE_POLARITY = 1 

then parport 0x278 pin 13 had to be shorted out to get out of estop. 

I used the script IO_Show to view the conditions of the parport.  If the
one Cohn wrote is better, perhaps we should incorporate it in the release.

Hope this helps.

Ray


On Sat, 24 Mar 2001, Tim wrote:
> 
> He has 2 parallel ports so BRIDGEPORTIO will work for him (just make sure
> you have the addresses correct in the ini file). As lokg as you have the
> proper IO for the card setup then the only other trick is to change the
> polarity on the ESTOP_SENSE_POLARITY
> 
> Tim
> [Denver, CO]
>   -----Original Message-----
>   From: emc-at-nist.gov [emc-at-nist.gov]On Behalf Of William Scalione
>   Sent: Saturday, March 24, 2001 3:58 PM
>   To: Multiple recipients of list
>   Subject: Re: Parport problem(s)
> 
> 
>   Coen,
> 
>   I think you will have problems comming out of E-Stop if you are
>   using bridgeportio. you need to change it to minimillio. They are
>   located near the bottom of the ini file. Those filenames may not
>   be right but they are close to that. I believe the bridgeport file
>   moves some of the io to the second parallel port. You can also
>   try changing the polarity of the min and max limit switch parameters
>   under each axis. The EMC will not come out of E-Stop if it senses
>   one of the limit switches is made
> 
>   See the handbook below.
> 
>   http://www.linuxcnc.org/handbook/index.html
> 
>   Bill
> 
>     Hello,
> 
>     Thank you Tim for helping with the PERIOD parameter problem.
> 
>     I'am still "somewhat running aroud" but now with EMC 17 Sep 1999
>     the EMC starts up in realtime! And is waiting for me to ground
>     pin 13 of the parallel port. (E-STOP Locked? Jon Elson to Till Franitza,
>      12 Oct 1999) But the EMC does not come out of E-STOP. Am I doing
>     something wrong in the startup sequence? Pressing F1 within several
>     seconds after making pin 13 True or something like that?
> 
>     I already made my own "parallel port status read program" When I ground
>     pin 13 I see a change of status of this pin, but the EMC not.
> 
>     I added an extra ISA-card with 2 parallel ports on it, the BIOS lists
> both
>     ports during booting.
> 
>     Where can I find the "testppt" program?
> 
>     Thanks,
>     Coen Olthof
> 

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