New on 2.4 is a THC comp designed to work with the Mesa THCAD High Isolation A-D Card. This card takes a 0-10v input and converts it to a pulse that is read by the 5i20 encoder input. The velocity output goes into my THC comp and controls the Z axis with offsets to maintain the desired input. After the cut when the Z clearance move is in progress any offsets are removed as the Z axis moves up.
John On 2/17/2010 1:38 PM, Viesturs Lācis wrote: > hello! > > i have recently started getting familiar with EMC2 - it is wonderful > software, developers have my thanks and all the respect :)) > i have been following this mailing list for few weeks and due to my > limited knowledge in CNC and computer literacy/programming now it is > time for me to ask a question. > > i am implementing waterjet cutting machine upgrade from 2 axis to 5 > axis and subsequently - DOS-based controlling system to EMC2. > > part of this implementation is Tool [torch] Height Control - i have > ultrasonic sensor that i would like to use for nozzle height control. > Datasheet of the sensor is here: > http://info.bannersalesforce.com/xpedio/groups/public/documents/literature/110738.pdf > > i have searched for more information on THC implementation and what > confuses me is that it seems like i would need some additional > hardware as described here: > http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Torch_Height_Control > > the question is - is there a way to set THC in a way that EMC2 > acquires data directly from sensor and adjusts Z axis height as > required (at least at the beginning of executing file for 5 axis code > and preferrably floating Z axis for 2 axis code. creating 2 separate > machine profiles - 2 axis and 5 axis - is acceptable)? without > additional boards and hardware as i do not understand, what is their > purpose. > > i have a Pixsys DRR 245 controller available - if that can help EMC2 > in understanding sensor's outputs or transform the signal in some > way... short description about this controller: > http://www.instrumart.com/Product.aspx?ProductID=22402 > > thanks in advance, if anyone can share advice! > > Viesturs > > ------------------------------------------------------------------------------ > SOLARIS 10 is the OS for Data Centers - provides features such as DTrace, > Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW > http://p.sf.net/sfu/solaris-dev2dev > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
