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on-demand_registers [2018/11/26 14:23] emozolyakon-demand_registers [2018/11/26 21:25] akuzmuk
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-====== Read-on demand registers ======+====== Read on demand registers ======
  
 Each remote device, connected to WebHMI always has some settings or setup data which does not have to be read in each WebHMI scan. They are actually accessed by operator only during commisioning or installation.  Each remote device, connected to WebHMI always has some settings or setup data which does not have to be read in each WebHMI scan. They are actually accessed by operator only during commisioning or installation. 
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 So when you add many such controllers with all registers to the WebHMI project, it will communicate 90% of time in vain, and only 10% to read important data.  So when you add many such controllers with all registers to the WebHMI project, it will communicate 90% of time in vain, and only 10% to read important data. 
  
-To avoid this situation, there is a special attribute for the registers which marks them as "Read on-demand" so that WebHMI skips them when polling external devices. +To avoid this situation, there is a special attribute for the registers which marks them as "Read on-demand" so that WebHMI skips them when polling external devices thus minimizing scan time
  
   Tip: Group all read-on demand registers in one or two 'settings' category then they can be easily accessed and    Tip: Group all read-on demand registers in one or two 'settings' category then they can be easily accessed and 
on-demand_registers.txt · Last modified: 2022/01/15 08:12 by 127.0.0.1

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