cmg...@sover.net wrote: > Are step and direction "pulses" present at the parallel port just ignored > in this system of "Mesa Cards and Hostmot2" ?
When using the 7i43, emc2 does *not* make pulses on the parallel port. Instead it sends commands via the parallel port to the 7i43 (which *does* make the pulses). > What system handles pulse duration and direction hold time? Is that all > in the FPGA or is EMC2 in control via the ini files? The step pulse timing are put into the .ini & .hal files by the person building the machine. They're read by emc2 at init time and sent to the hostmot2 driver, which sends them to the FPGA. The FPGA then ensures that the pulse train it emits does not violate the timing specs. -- Sebastian Kuzminsky ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
