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REAL_TO_BYTE |
  
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REAL_TO_BYTE |
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Block that performs the conversion of a REAL value into a BYTE value.
Ladder Representation
Block Structure
Variable Type |
Name |
Data Type |
Description |
VAR_INPUT |
EN |
BOOL |
Block enabling |
Value |
REAL |
Value in REAL |
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VAR_OUTPUT |
ENO |
BOOL |
End of operation |
Result |
BYTE USINT SINT |
Value in BYTE |
Operation
When this block has a TRUE value in EN, it interprets the Value value as REAL and converts it into BYTE, storing in Result.
When EN has FALSE value, Result remains unchanged.
The ENO value forwards to the next Ladder block the EN value after the operation is completed.
Block Flowchart
Example in Ladder
The examples above perform the conversion of variable VALUE, in REAL, into a BYTE value storing the final result in RESULT. The block ends with success and ENO output is activated. Notice that the results are truncated in decimal and only the eight least significant bits are taken into account.
Example in ST
The example below displays the instructions for applying the example above in the ST language.
VAR VALUE : REAL := 1.9; RESULT : SINT; END_VAR
RESULT := FB_REAL_TO_BYTE(EN:=DI1, Value:=VALUE, ENO=>DO1);
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