Closing the loop... Latest firmware updates available at http://prologix.biz includes the ++savecfg command to temporarily disable automatic saving of configuration parameters (including address). Please see manual for details.
Regards, Abdul -----Message d'origine----- De : time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] De la part de Mark Sims Envoyé : lundi 6 juillet 2009 18:54 À : time-nuts@febo.com Objet : [time-nuts] Prologix GPIB-USB vs. GPIB-LAN vs. NI was: AW: Prologix GPIB-USB vs. GPIB-LAN The Prologix adapter has a ++addr command for changing the GPIB address. You can select different instruments that way. Unfortunately, the version I looked seems to have a potentially fatal flaw. When you change the ++addr, the device writes the internal microprocessor EEPROM. The EEPROM is speced a 1 million write cycles. If you changed instruments at once a second, in under two weeks the chip could be toast. My app could have worn out the chip in under a day... All this assumes that Prologix did not implement some sort of elaborate wear leveling scheme in their software, but I suspect not. They seem to have intended one to set up the device to talk to one instrument then save that configuration in the chip. Dynamically hammering the thing to death with address changes was not the intention of the ++addr command. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.