2011/7/20 Thomas Powderly <tomp4...@gmail.com>: > > Could you explain a bit about this feature? > " this one has 2 independent THC sensors working together."
There are 2 THC solutions installed on machine: 1) inductive sensor, with a small arm and a ring at arms end, the ring is located approximately so that plasma torch tip is 1 mm above its center; 2) THC300, which measures plasma voltage. After some test cuts and discussions with client about desired behavior, they were set to work in a following way: 1) if inductive sensor tells "move up", then Z moves up, ignoring the other sensor 2) if inductive sensor tells "move down", then: a) if there is no stable "arc_ok" signal (filtered through "debounce" component for 0,4 s), then Z moves down; b) if there is stable "arc_ok" signal, then it follows "up" or "down" commands from THC300 Basically it works like this - both signals are compared and the one, who is lower than other, is ignored and inductive sensor is master, so that it bring Z up, if the sensor's arm touches material, regardless of THC300. And it ignores THC300, if there is no stable "arc_ok" signal. Client did not want to use "arc_ok" signal for some additional logic, for example - stop cutting, if arc is disrupted. Viesturs ------------------------------------------------------------------------------ 10 Tips for Better Web Security Learn 10 ways to better secure your business today. Topics covered include: Web security, SSL, hacker attacks & Denial of Service (DoS), private keys, security Microsoft Exchange, secure Instant Messaging, and much more. http://www.accelacomm.com/jaw/sfnl/114/51426210/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
