Kirk, Also depending on possible risk hardware/ software implementations are required to be control reliable. Technically emc or mach or other controllers would fail that requirement unless certified by a testing lab like tuv
------Original Message------ From: Kirk Wallace To: Work To: Emc mail list Subject: Re: [Emc-users] Guidance on usb comp Sent: Feb 24, 2011 3:53 PM On Thu, 2011-02-24 at 17:29 +0000, Jean-Paul Moniz wrote: > Phil > > Safety should always be a hardware solution. Safety software > applications should be tested and certified to international > standards. > > Signals back to a controller are just a formality imho > > In the case of emc. The pc is the controller and not hacked up at all. > > However if it was a windows os there would be lots of hacking going on > to get something that appears to be real time > Sent on the TELUS Mobility network with BlackBerry In a proper e-stop system, EMC2 (or other) is a peer to other e-stop triggers. EMC2 can trigger an e-stop, as well as BRB's, or other sensors, but the e-stop loop should bring the power supplies, drives, etcetera to a safe condition independently of EMC2, Windows or other software, unless it can not be avoided. An e-stop search found: http://www.hs-compliance.com/uploaded/documents/THE%20EMERGENCY%20STOP.pdf (BTW, It would not bother me at all to see the "Sent by my newfangled device" go away. Apparently, it is part of the user's signature and is easy to change. Why give them free advertising on your dime?) -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA Sent on the TELUS Mobility network with BlackBerry ------------------------------------------------------------------------------ Free Software Download: Index, Search & Analyze Logs and other IT data in Real-Time with Splunk. Collect, index and harness all the fast moving IT data generated by your applications, servers and devices whether physical, virtual or in the cloud. Deliver compliance at lower cost and gain new business insights. http://p.sf.net/sfu/splunk-dev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
