Re: PCI I/O cards

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

On Tuesday 11 December 2001 11:07 am, Kurtis wrote:
> Thanks for all the advice regarding the above issue.
<s>
> I am collaborating with someone local who does C programming and has
> controls experience.
> We will be using a second monitor and keyboard for the remote operator
> station instead of keeping the existing remote pendant with its manual
> pushbuttons, selector switchs, and indicators.

Will this code and an explanation be available to put is sourceforge as an 
addition to the EMC project?

<s> I have spent much time deciding how to uprgrade this machine - and 
>three
> others in the future.  I have spent alot of time trying to bring myself
> up-to-speed with the EMC project and I don't expect to get everything
> right without a mistake or two along the way.  I have found a lot of
> good information on this list; although it does take time to seperate
> out the important and relevant.
>
> I thank all those who contribute time and expertise to the questions
> posted here. (Now if more of the information could be put into an
> up-to-date and complete handbook, the world would be a better place.)

Would like you to help with that?

Ray


> Kurtis
>
> > -----Original Message-----
> > From: emc-at-nist.gov [emc-at-nist.gov]On Behalf Of Ray
> > Sent: Sunday, December 09, 2001 7:02 PM
> > To: Multiple recipients of list
> > Subject: Re: PCI I/O cards
> >
> >
> >
> >
> > Kurtis
> >
> > I didn't see your original post of this but have a few comments. 
> > First the software issues and then the hardware.
> >
> > Fred's comments re the stg are that you can use the extra STG I/O that
> > isn't used for axis stuff for anything that you wish.  The hook here
> > is that you will have to hack the bridgeport C code to do that.
> >
> > There is a Tcl/Tk parallel to the bridgeportio named tkio.  You can
> > read about creating a PLC and about using Tcl/Tk  with the iosh
> > interface in the linuxcnc.org/handbook.  You can run tkio by simply
> > replacing bridgeportio with it on the approariate line in your ini
> > file.
> >
> > You do not need any external proprietary device drivers.  The
> > interface iosh which is called by tkio and several of the tcl scripts
> > can be used to
> > directly read and set any hardware that has a specific address.  This
> > direct access to ports is typical of the EMC.   An example of this
> > approach is emc/tcl/scripts/IO_Exercise.tcl.  If you have a free
> > parallel port, you can use this script to pull solenoids and read
> > switches as a stand alone or running alongside the EMC.  If the
> > Sealevel card has or can
> > be configured to have a defined location you can directly access that
> > location using the available emc software.  I don't have a clue how
> > you would do this across the PCI bus.
> >
> > There was some talk a while back about using a common parallel port
> > with some external logic chips.  The parports eight out could be
> > expanded to many descrete signals and the five in could be combined
> > from many descrete
> > signals.  This could be accomplished with a few logic chips and a
> > power supply.
> >
> > I have the advantage of knowing a little tcl but what I would do in
> > your case is write it using Tcl.  It is a rather easy language to
> > learn at the level that you would need for your PLC project.  Doing
> > this would require some processor power but it is a quick code to
> > test.  You could have your code starting to pull servos and read
> > switches in a few minutes. (Immediate gratification is good here!)  As
> > the code and logic grows and evolves to include full machine control
> > and safety and is running the machine to your satisfaction, you could
> > migrate, or hire, or con someone into migrating that code to C to
> > produce a final system.
> >
> > This code would eventually become of value to other emc users if
> > you built
> > it as a set of blocks, ie tool logic, pallet logic, operator panel
> > logic that could be configured from the ini file or an aux ini and
> > combined to produce a working machine.
> >
> > I'd be able to share my ideas and work with you a bit on the tcl
> > coding here.
> >
> > Ray
> >
> > On Saturday 08 December 2001 10:29 pm, Don wrote:
> > > The STG card has 32 bits of digital input.  Isn't that enough?  Of
> > > course, we're not PCI yet.
> > >
> > > Don McLane
> > > Servo To Go, Inc.
> > >
> > > At 11:46 AM 11/30/01 -0500, you wrote:
> > > >This is a multi-part message in MIME format.
> > > >
> > > >--------------InterScan_NT_MIME_Boundary
> > > >Content-type: multipart/alternative;
> > > >  boundary="Boundary_(ID_KUzl4HCuPVZJ1AAgI0loPg)"
> > > >
> > > >--Boundary_(ID_KUzl4HCuPVZJ1AAgI0loPg)
> > > >Content-type: text/plain; charset=iso-8859-1
> > > >Content-transfer-encoding: 7BIT
> > > >
> > > >Calling Linux programmers,
> > > >
> > > >My EMC application requires more I/O than is presently configured
> > > > to the parallel port with the Bridgeport "plc".
> > > >I am hoping to move the parallel port stuff
> > > > (lube,spindle,coolant,estop) to a Sealevel PCI Bus 48 TTL Digital
> > > > I/O Interface as well as incorporate the remaining I/O.
> > > >(8 tool limit switches, remote pendant functions, x and y axis
> > > > brakes) The software that came with the Sealevel card has two
> > > > steps: step 1.  =  install drivers.  This worked and prompted
> > > > installation complete.
> > > >step 2.  =  load drivers.  This uses the mknod command to create
> > > > device special files.  Running the load drivers resulted in : 
> > > > mknod: wrong number of arguments
> > > >The manufacturer of the card (Sealevel) assures me that the program
> > > > works on Linux.
> > > >How can I read and write to this PCI card the way I do with the
> > > > Servo to Go card.
> > > >
> > > >The next step will be to include STG analog inputs of spindle speed
> > > > and spindle load on the Tkemex Gui.  Ray says the GUI stuff is the
> > > > easy part.
> > > >
> > > >Kurtis
> > > >
> > > >
> > > >
> > > >--Boundary_(ID_KUzl4HCuPVZJ1AAgI0loPg)
> > > >Content-type: text/html; charset=iso-8859-1
> > > >Content-transfer-encoding: 7BIT
> > > >
> > > ><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
> > > >Calling Linux programmers,
> > > >
> > > >My EMC application requires more I/O than is presently configured
> > > > to the parallel port with the Bridgeport "plc".
> > > >I am hoping to move the parallel port stuff
> > > > (lube,spindle,coolant,estop) to a Sealevel PCI Bus 48 TTL Digital
> > > > I/O Interface as well as incorporate the remaining I/O.
> > > >(8 tool limit switches, remote pendant functions, x and y axis
> > > > brakes) The software that came with the Sealevel card has two
> > > > steps: step 1.  =  install drivers.  This worked and prompted
> > > > installation complete. step 2.  =  load drivers.  This uses the
> > > > mknod command to create device special files.  Running the load
> > > > drivers resulted in : mknod: wrong number of arguments
> > > >The manufacturer of the card (Sealevel) assures me that the program
> > > > works on Linux.
> > > >How can I read and write to this PCI card the way I do with the
> > > > Servo to Go card.
> > > >
> > > >The next step will be to include STG analog inputs of spindle speed
> > > > and spindle load on the Tkemex Gui.  Ray says the GUI stuff is the
> > > > easy part.
> > > >
> > > >Kurtis
> > > >
> > > >
> > > >
> > > >
> > > >--------------InterScan_NT_MIME_Boundary--
> > > >--Boundary_(ID_KUzl4HCuPVZJ1AAgI0loPg)
> > > >
> > > >
> > > >--Boundary_(ID_KUzl4HCuPVZJ1AAgI0loPg)--
> > > >--------------InterScan_NT_MIME_Boundary--