en:software:devices:modbus

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en:software:devices:modbus [2016/12/22 16:28] – [5.9. Estensione del protocollo] qem103en:software:devices:modbus [2016/12/23 14:53] – [5.10.1. Simbologia adottata] qem103
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 To allow support for datatypes larger than 16 bit, has been designed an extension to the protocol to treat long 32 bit dimension values. Implementing this feature preserves the formatting of the message standard modbus it uses the contents of two consecutive addresses to represent a 32 bit value. When this extension is enabled (wider = 1), depending on the address used the slave responds with a 16-bit or 32-bit value for each log request. If the address is greater than 5000 will be returned a 32-bit value, if under the Protocol remains unchanged with response to 16 bits. To allow support for datatypes larger than 16 bit, has been designed an extension to the protocol to treat long 32 bit dimension values. Implementing this feature preserves the formatting of the message standard modbus it uses the contents of two consecutive addresses to represent a 32 bit value. When this extension is enabled (wider = 1), depending on the address used the slave responds with a 16-bit or 32-bit value for each log request. If the address is greater than 5000 will be returned a 32-bit value, if under the Protocol remains unchanged with response to 16 bits.
  
-==== - Comandi e parametri ====+==== - Commands and parameters ====
  
-=== - Simbologia adottata === +=== - Used symbols === 
-Il nome del parametro, stato o comando viene riportato alla sinistra della tabella.+ 
 +The parameter name, condition or command is taken back to the left side of the table.
  
 **R**\\ **R**\\
-Indica se il relativo parametro o stato è ritentivo (al momento dell’inizializzazione del device mantiene lo stato precedentemente definito), oppure lo stato che assume al momento dell’inizializzazione del device.\\ +Indicates if the parameter or state is retentive (upon initialization of the device maintains the previously defined state), or the state assumes upon initialization of the device.\\ 
-Se il device non necessita di inizializzazione il campo “R” indica il valore che il parametro o stato assume all’accensione della scheda.\\ +If the device does not need to initialize the “R” field indicates the value that the parameter or state take at the at power-up card.\\ 
-R = Ritentivo\\ +R = Retentive\\ 
-0 = Al momento dell’inizializzazione del device il valore viene forzato a zero.\\ +0 = Upon initialization of the device the value is forced to zero.\\ 
-1 = Al momento dell’inizializzazione del device il valore viene forzato a uno.\\ +1 = Upon initialization of the device the value is forced to one.\\ 
-- = Al momento dell’inizializzazione del device viene presentato il valore significativo.+- = Upon initialization of the device is presented significant value.
  
 **D**\\ **D**\\
-Indica la dimensione del parametro.\\+Indicates the size of the parameter.\\
 F = Flag\\ F = Flag\\
 B = Byte\\ B = Byte\\
  • Last modified: 2020/07/13 14:58