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DIV |
  
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DIV |
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Block that calculates the division of the values of Value1 and Value2, storing the result in Result.
Ladder Representation
Block Structure
Variable Type |
Name |
Data Type |
Description |
VAR_INPUT |
EN |
BOOL |
Block enabling |
Value1 |
BYTE USINT SINT WORD UINT INT DWORD UDINT DINT REAL |
Dividend of the operation |
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Value2 |
BYTE USINT SINT WORD UINT INT DWORD UDINT DINT REAL |
Divisor of the operation |
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VAR_OUTPUT |
Done |
BOOL |
End of operation |
Result |
BYTE USINT SINT WORD UINT INT DWORD UDINT DINT REAL |
Variable that stores the result of the operation |
Operation
When this block has a TRUE value in EN, it sends to the Result output the division of Value1 and Value2 variables. The value stored will be the exact division if Result is REAL, or, in other cases, only the quotient. If no errors, the Done variable is set. If there is any error in the operation, Done is not set, staying in FALSE status, while Result remains with its value unchanged.
When EN has FALSE value, Result remains unchanged and Done remains in FALSE.
Block Flowchart
Example in Ladder
The above example calculates the division of VALUE 1 and VALUE2 variables, storing the final result in RESULT. Since RESULT is SINT type, only the quotient is stored in it.
The above example calculates the division of VALUE 1 and VALUE2 variables, storing the final result in RESULT. Since RESULT is of REAL type, the exact value of the division is stored in it.
The above example calculates the division of VALUE 1 and VALUE2 variables, storing the final result in RESULT. Since RESULT is SINT type, only the quotient is stored in it. Notice that the block accepts arguments of both signs.
The above example calculates the division of VALUE 1 and VALUE2 variables, storing the final result in RESULT. Since VALUE2 is zero, the block generates a runtime error, RESULT remains unchanged and the output is disabled.
Example in ST
The example below displays the instructions for applying the example above in the ST language.
VAR VALUE1 : SINT := 70; VALUE2 : SINT := -8; RESULT : SINT; END_VAR
RESULT := FB_DIV( EN:=DI1, Value1:=VALUE1, Value2:=VALUE2, Done=>DO1);
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