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???
07/21/11 17:20
Modified:
  07/21/11 17:26
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 		 #182956 - fine table, i just have to add
Responding to: ???'s previous message
I will typically only use this if I have a lot of boards, but only one of them needs to be jumped, as in termination needs for RS-485 to control multiple motors. The idea is that once configured the board will never change

This approach is only reasonable for "very technillay qualified" installers. For a product using jumpers for RS-485 I can't count the number of service calls resulting from some customer not setting the jumpers right when a replacement unit was shipped. It went even wilder when a customer moved units around "for diagnosing"

A much better approach is to sort out the devices by using a DS2401 to assign node numbers and a short in a plug to set the termination. That way it is always right.

Erik

List of 43 messages in thread
TopicAuthorDate
PAD as Jumper            01/01/70 00:00      
   Make It Like...            01/01/70 00:00      
      Snake eating snake ;)            01/01/70 00:00      
   Constructing a component..            01/01/70 00:00      
      clue needed            01/01/70 00:00      
         Altium designer forum            01/01/70 00:00      
         Component            01/01/70 00:00      
            The "Component" has 2 pads.            01/01/70 00:00      
               It is quite common ...            01/01/70 00:00      
                  Common practice, ...            01/01/70 00:00      
                     perspective?            01/01/70 00:00      
                        My perspective            01/01/70 00:00      
                           fine table, i just have to add            01/01/70 00:00      
                              technically proficient installers            01/01/70 00:00      
                                 That is not how I think            01/01/70 00:00      
                                    A soldier jump            01/01/70 00:00      
                                 Not for field configuration            01/01/70 00:00      
                                    But Dev Boards            01/01/70 00:00      
                                       RE: But Dev Boards            01/01/70 00:00      
   Another possibility to consider....            01/01/70 00:00      
   Some other ideas from the web            01/01/70 00:00      
      that final picture            01/01/70 00:00      
         original page reference            01/01/70 00:00      
            Another Example Linking Picture            01/01/70 00:00      
               I get the red box again!            01/01/70 00:00      
                  Red Box Indeed...            01/01/70 00:00      
                  Trivial setting, but sometimes quite needed            01/01/70 00:00      
      Going the other way            01/01/70 00:00      
         Removing a Link            01/01/70 00:00      
            You misunderstand            01/01/70 00:00      
               I did misunderstand....            01/01/70 00:00      
      The Whole Point...            01/01/70 00:00      
   PAD as Jumper            01/01/70 00:00      
      Narrow, pointy bits            01/01/70 00:00      
      Isn't that a touch sensor?            01/01/70 00:00      
         PAD as jumper            01/01/70 00:00      
            same comment            01/01/70 00:00      
            Use This            01/01/70 00:00      
               PAD as Jumper            01/01/70 00:00      
                  Narrow Gap            01/01/70 00:00      
   PAD as Jumper/Short link            01/01/70 00:00      
      What "problem" ?            01/01/70 00:00      
      CAD software has lots of primitives            01/01/70 00:00      

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