Diogenis Posted November 16, 2011 Report Share Posted November 16, 2011 Hi little question. Why can not I choose what to download. ???? Diogenis Quote Link to comment Share on other sites More sharing options...
MVP 2014 Simon Posted November 16, 2011 MVP 2014 Report Share Posted November 16, 2011 I am not sure of the exact technical reason for this, but it is a normal characteristic of the Jazz. When using M90/M91 PLCs these options are available (not greyed out). Quote Link to comment Share on other sites More sharing options...
MVP 2023 Joe Tauser Posted November 17, 2011 MVP 2023 Report Share Posted November 17, 2011 Going way back to when Avner was in sales it was explained to me the the M90 has two separate program memories, but only runs one at a time. That's why when you download a program you don't interrupt the PLC - it just switches to the other program memory when download is complete. The Jazz only has one program memory, which is why when you download the program it has to stop and it's an all-or-nothing deal. Joe T. Quote Link to comment Share on other sites More sharing options...
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