Roberto, I was planning on a large power supply and using simultaneous mode, but from my prior experience we still wouldn't be able to poll the temperature of all the devices very quickly. Thus the need for more buses to run in parallel.
jerry On 10/01/2014 11:53 AM, Roberto Spadim wrote: > hummm you need to measure, or check a alarm condition? > > with 300 using alarm condition is possible only alarmmed sensors will > be reported at bus, it's not temperature convertion it's only alarm > information (alarm on/off) > > measuring temperature you should use (i don't remember the owfs file > name) a option to convert all sensors at same time, but ensure a good > power supply and after read one by one without convert temperature > (the same owfs file do this) > > 2014-10-01 15:04 GMT-03:00 Jerry Scharf <sch...@lagunawayconsulting.com>: >> Hi, >> >> I am looking at using 18b20s to measure some load resistors and a couple >> other things. This is for a large bank of unit under test. The thing is >> that there are 300 load resistors plus 20-30 other channels to track. >> Then again, if we do a second monitor point, that's another 300 sensors. >> >From my experience with 30 sensors, having 300 is going to take a number >> of buses to be able to poll in finite time. >> >> How many buses make sense? What type of bus masters should I choose? We >> will have some type of monitor computer, probably a linux box. >> >> thanks in advance, >> jerry >> >> >> ------------------------------------------------------------------------------ >> Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer >> Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports >> Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper >> Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer >> http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk >> _______________________________________________ >> Owfs-developers mailing list >> Owfs-developers@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/owfs-developers > > ------------------------------------------------------------------------------ Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
