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en:software:qview:qview_6:qview60 [2015/04/28 15:06] – [3.12. DATAGROUP variables old] qem207en:software:qview:qview_6:qview60 [2015/04/28 16:06] – [3.11.2. Indexed Variables] qem207
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 Datagroup variables are a special data structures, that are stored in retentive memory. They are declared in the configuration unit and are suitable to represent a recipe database. \\ Datagroup variables contains two kinds of variable: Datagroup variables are a special data structures, that are stored in retentive memory. They are declared in the configuration unit and are suitable to represent a recipe database. \\ Datagroup variables contains two kinds of variable:
  
-==== - Variabili Statiche ====+==== - Static Variables ====
 <code QCL> <code QCL>
 DATAGROUP DATAGROUP
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     <variable name> <F/B/W/L/S>     <variable name> <F/B/W/L/S>
 </code> </code>
-Le variabili statiche risiedono nel sottosettore di DATAGROUP nominato come DATAPROGRAM. Il primo valore di questo settore è un numero o una costante intera, e indica il numero di ricette dell'archivio. Le variabili statiche sono da considerarsi come contenitori di un determinato valore per ogni ricetta, e sono accessibili come un array, dove l'indice è il numero di ricetta desiderata. Esempio:+Static variables reside in DATAGROUP subsector named DATAPROGRAM. The first value of this sector is a number or an integer constant, and represents the number of recipes in archive. Static variables are to be considered as containers of a certain value for each recipe, and are accessed as an array, where the index is the number of desired recipe. Example: 
 <code QCL> <code QCL>
 DATAGROUP DATAGROUP
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     Variable3     F     Variable3     F
 </code> </code>
-Per far riferimento alla variabile //Variable3// della ricetta 5, viene usato il codice:+To refer to variable //Variable3// in recipe 5, the used code is:
 <code QCL> <code QCL>
 Variable3[5] Variable3[5]
 </code> </code>
  
-Possiamo immaginare la struttura della memoria di una variabile DATAGROUP, nel nostro esempio con variabili statiche, come la seguente tabella:+We can imagine the memory structure of a variable DATAGROUP, in our example with static variables, as the following table:
 ^ ^  Variable1  ^  Variable2  ^  Variable3  ^ ^ ^  Variable1  ^  Variable2  ^  Variable3  ^
-^Ricetta 1| | | | +^Recipe 1| | | | 
-^Ricetta 2| | | | +^Recipe 2| | | | 
-^Ricetta 3| | | |+^Recipe 3| | | |
 ^...| | | | ^...| | | |
-^Ricetta 100| | | |+^Recipe 100| | | | 
 + 
 +==== - Indexed Variables ====  
 +<code QCL> 
 +DATAGROUP 
 +  <DataGroup Name> 
 +  DATAPROGRAM 
 +    <number of recipes> 
 +  STEP 
 +    <number of steps> 
 +;Indexed variables declaration 
 +    <variable name> <F/B/W/L/S> 
 +    <variable name> <F/B/W/L/S> 
 +    <variable name> <F/B/W/L/S> 
 +</code> 
 +Indexed variables reside in DATAGROUP subsector named STEP. Their function is to introduce for each recipe, the concept of step. The first value of this sector is a number or an integer constant, and represents the number of steps for each recipe in archive. Indexed variables are to be considered as containers of a list of values for each recipe, and are accessed as a 2-dimensional array, where the first value is the number of the recipe, the second the number of desired step. Example: 
 +<code QCL> 
 +DATAGROUP 
 +  Name 
 +  DATAPROGRAM 
 +    100 
 +;Static variables declaration 
 +    Variable1     L 
 +    Variable2     S 
 +    Variable3     F 
 +  STEP 
 +    10 
 +;Indexed variables declaration 
 +    Variable4     W 
 +    Variable5     B 
 +</code> 
 +To refer to variable //Variable4// in recipe 5 to step 9, the used code is: 
 +<code QCL> 
 +Variable4[5, 9] 
 +</code> 
 + 
 +We can imagine the memory structure of a variable DATAGROUP, in our example with static and indexed variables, as the following table: 
 + 
 +^ ^  Variable1  ^  Variable2  ^  Variable3  ^  Variable4  ^^^^^  Variable5  ^^^^^ 
 +^Recipe 1| | | | | | | | | | | | | | 
 +^:::|:::|:::|:::| | | | | | | | | | | 
 +^Recipe 2| | | | | | | | | | | | | | 
 +^:::|:::|:::|:::| | | | | | | | | | | 
 +^Recipe 3| | | | | | | | | | | | | | 
 +^:::|:::|:::|:::| | | | | | | | | | | 
 +^...| | | | | | | | | | | | | | 
 +^:::|:::|:::|:::| | | | | | | | | | | 
 +^Recipe 100| | | | | | | | | | | | | | 
 +^:::|:::|:::|:::| | | | | | | | | | |
  
 +Other informations:
 +  * In a DATAGROUP all variables, both static and indexed, are retentive (maintain the value at power off).
 +  * The Datagroup variables may be more than one, in this case it is necessary to insert more DATAGROUP keywords.
 +  * The subsection DATAPROGRAM is mandatory, while the STEP is optional.
 +  * The maximum number of recipes can be set is 65534.
 +  * The maximum number of steps can be set is 65534.
 +  * Compared to a common array, static variables can also support a Flag size data (F).
 ===== - DATAGROUP variables old ===== ===== - DATAGROUP variables old =====
 Datagroup variables are a special data structures. When declaring a datagroup, a part of memory is organised in a table of rows and columns. The columns are called  //programs// or //recipes//, while the rows are //steps//.\\ Datagroup variables are a special data structures. When declaring a datagroup, a part of memory is organised in a table of rows and columns. The columns are called  //programs// or //recipes//, while the rows are //steps//.\\
  • Last modified: 2022/08/31 09:02