en:software:devices:modbus

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en:software:devices:modbus [2016/12/21 17:40] – [Read Input Register] qem103en:software:devices:modbus [2016/12/21 17:59] – [Force multiple coil] qem103
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 === Read Holding Register === === Read Holding Register ===
  
-Word read function. Si vogliono leggere le word di un certo slave (idcard). Sets the parameter //type// = 3.\\+Word read function. For reading the word of the slave (idcard). Sets the parameter //type// = 3.\\
 You must to set addr to indicate the address of the word in the slave from which to start reading. The num parameter indicates the number of word to be read. You must set tabreg to indicate the index of the word in the “read data table” of the master from which you want are writes the read words. The read values will be saved in the “read data table”. It is recommended to always meet the following two conditions:\\ You must to set addr to indicate the address of the word in the slave from which to start reading. The num parameter indicates the number of word to be read. You must set tabreg to indicate the index of the word in the “read data table” of the master from which you want are writes the read words. The read values will be saved in the “read data table”. It is recommended to always meet the following two conditions:\\
 (addr + num - 1) <= 32 e (tabreg + num - 1) <= 32 otherwise the request will fail (reporting by wcmd). (addr + num - 1) <= 32 e (tabreg + num - 1) <= 32 otherwise the request will fail (reporting by wcmd).
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 === Read Input Register === === Read Input Register ===
  
-Word read function. Si vogliono leggere i bit di un certo slave (idcard). La funzione è identica alla “Read Holding Register”. Viene impostato il parametro type = 4.\\ Il significato delle due funzione si distingue a livello di protocollo MODBUS. Alcuni slave possono mettere a disposizione delle zone di memoria differenti a seconda se le word lette sono Holding o Input. Nel caso di slave Qmove le due richieste hanno lo stesso effetto.+Word read function. For reading the bit of the slave (idcard). The function is equal to the “Read Holding Register”. sets the parameter type = 4.\\ The meaning of the two functions is distinguished at the level of MODBUS protocol. Some slave can make available different memory areas depending if the read word are Holding or Input. In the case of slave Qmove the two requests have the same effect.
  
-==== - Richieste di scrittura ====+==== - Write request ====
  
 === Force coil === === Force coil ===
-Funzione di scrittura bit. Si vogliono scrivere (forzare) i bit di un certo slave (//idcard//). Viene impostato il parametro //type// = + 
-5.\\ Bisogna impostare addr per indicare l’indirizzo del bit nello slave in cui si intende scrivere. Bisogna impostare tabreg +Bit write function. For writing (force) the bit of the slave (//idcard//). Sets the parameter //type// = 5.\\ You must set addr to indicate the address of the bit in the slave that you want to write. You must set tabreg to indicate the index of the bit in the “write data table” that contains the value to be written.
-per indicare l’indice del bit nella “tabella dei dati da scrivere” in cui è contenuto il valore da scrivere.+
  
 === Force register === === Force register ===
-Funzione di scrittura singola word. Si vuole scrivere (forzare) la word di un certo slave (//idcard//). Viene impostato il parametro + 
-//type// = 6.\\ Bisogna impostare addr per indicare l’indirizzo della word nello slave in cui si intende scrivere. Bisogna +Word write function. For write (force) the word of a slave (//idcard//). Sets the parameter //type// = 6.\\ You must set addr to indicate the address of the word in the slave that you intend to write. You must set tabreg to indicate the index of the word in the “data write table” that contains the value to be written.
-impostare tabreg per indicare l’indice della word nella “tabella dei dati da scrivere” in cui è contenuto il valore da scrivere.+
  
 === Force multiple coil === === Force multiple coil ===
-Funzione di scrittura bit multipli. Si vogliono scrivere (forzare) i bit di un certo slave (//idcard//). Viene impostato il parametro + 
-//type// = 15.\\ Bisogna impostare addr per indicare l’indirizzo del bit nello slave in cui si intende scrivere. Si deve impostare in +Multiples bit write function. For write (force) the bit of a slave (//idcard//). Sets the parameter //type// = 15.\\ You must set addr to indicate the address of the bit in the slave that you intend to write. You must set in num the number of bits to write. You must set tabreg to indicate the bit index of the “data write table” from which to begin the values to be written. It is recommended to always meet the following two conditions:\\ 
-num il numero di bit da scrivere. Bisogna impostare tabreg per indicare l’indice del bit nella “tabella dei dati da scrivere” +(addr + num - 1) <= 512 e (tabreg + num - 1) <= 512 otherwise the request will fail (reporting by wcmd).
-da cui iniziano i valori da scrivere. Si raccomanda di soddisfare sempre le seguenti due condizioni:\\ +
-(addr + num - 1) <= 512 e (tabreg + num - 1) <= 512 altrimenti la richiesta non potrà essere eseguita (segnalazione mediante wcmd).+
  
 === Force multiple register === === Force multiple register ===
  • Last modified: 2020/07/13 14:58