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???
02/03/11 19:26
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#180985 - Two UART
Responding to: ???'s previous message
Is it too simple to use a device with two UART?

Then do B -> C -> A

C (your unit) can directly send questions to A.
B (not in your control) can send questions (potentially buffered and delayed) through C to A.

If C have short questins that are quickly answered, then B will suffer quite short delays. To B, it will seem like A sometimes have to think a little bit longer before sending the answer.

List of 18 messages in thread
TopicAuthorDate
Paralleling Max232 output            01/01/70 00:00      
   Revommedation On Paralleling Outputs            01/01/70 00:00      
      Multiple Mux            01/01/70 00:00      
         Adding another brain is another option.            01/01/70 00:00      
      RS232 is *not* a bus            01/01/70 00:00      
         Two UART            01/01/70 00:00      
            how about a hub            01/01/70 00:00      
               Is there really such a beast?            01/01/70 00:00      
                  external UARTs            01/01/70 00:00      
                  There once was...            01/01/70 00:00      
   use 422/485            01/01/70 00:00      
      Can work well but big potentials for trouble            01/01/70 00:00      
         Thanks, Peter..            01/01/70 00:00      
            I didn't employ anything            01/01/70 00:00      
            some comments            01/01/70 00:00      
               You really need reliable protocol            01/01/70 00:00      
                  collision detection            01/01/70 00:00      
                     Collision avoidance            01/01/70 00:00      

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