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???
09/28/07 02:36
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 		 #145045 - The point is...
Responding to: ???'s previous message
Both you and I realise the tradeoff involved, so what is the point of the discussion? The standard involved in the discussion is Modbus, the code involved implements Modbus so anything else is immaterial. To reduce the fat would make it not compliant with Modbus so the vast amount of hardware, software and tools available for this would be of no use.

So, show me a documented protocol with wide industry support that uses async 56k baud that can poll 200 slaves in two seconds that has free tools.

List of 46 messages in thread
TopicAuthorDate
MCS-51 and RS485            01/01/70 00:00      
   Specifics?            01/01/70 00:00      
   not enough clear            01/01/70 00:00      
   RS485 code at code library didn't work's            01/01/70 00:00      
   .ASM or .C code nevermind            01/01/70 00:00      
      But what do you need it to do?            01/01/70 00:00      
         485 master slave            01/01/70 00:00      
            I did            01/01/70 00:00      
               RS-485 master/slave code.            01/01/70 00:00      
                  Try Modbus            01/01/70 00:00      
                     Oops sorry,Must using uart with another mode.            01/01/70 00:00      
   RS-485 code            01/01/70 00:00      
      Full duplex?            01/01/70 00:00      
         Full duplex ...the reasons            01/01/70 00:00      
            That's not a reason!            01/01/70 00:00      
            Technically            01/01/70 00:00      
               another reason            01/01/70 00:00      
                  maybe You need Ethernet?            01/01/70 00:00      
                     Another issue...            01/01/70 00:00      
                  wrong? not really, but wasteful            01/01/70 00:00      
                  another reason 2            01/01/70 00:00      
                     there is no 'same time'            01/01/70 00:00      
                        OK there wasn't same but....            01/01/70 00:00      
                           Asynchronous?            01/01/70 00:00      
                           if I understand what you are saying            01/01/70 00:00      
                              Something like this            01/01/70 00:00      
                                 Modbus            01/01/70 00:00      
                                    swicth to modbus            01/01/70 00:00      
                                       Sample code            01/01/70 00:00      
                                    References            01/01/70 00:00      
                                 collisions            01/01/70 00:00      
   try 30 baud            01/01/70 00:00      
   Before jumping to pool named as "modbus"            01/01/70 00:00      
      You have a calculator!            01/01/70 00:00      
         what a waste of bandwith            01/01/70 00:00      
            Tradeoff            01/01/70 00:00      
               There is overhead you can save with no ill effect            01/01/70 00:00      
                  The point is...            01/01/70 00:00      
                     modbus exist does not make it pantyhose            01/01/70 00:00      
                        For a beginner...            01/01/70 00:00      
   Getting wet with modbus by drag from Russel            01/01/70 00:00      
   AT89S8252 and AT89S52            01/01/70 00:00      
      Nope!            01/01/70 00:00      
         AT89S5X with 24LC02            01/01/70 00:00      
            Lot of work??            01/01/70 00:00      
            Quoting previous posts            01/01/70 00:00      

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