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WORD_TO_BYTES Convert Word to Bytes |
  
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WORD_TO_BYTES Convert Word to Bytes |
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Block that performs the conversion of a 16 bits (WORD) value in two 8 bits (2 BYTES) value.
Ladder Representation
Block Structure
Variable Type |
Name |
Data type |
Description |
VAR_INPUT |
EN |
BOOL |
Block enabling |
Value |
WORD UINT INT |
Value in WORD |
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VAR_OUTPUT |
ENO |
BOOL |
End of operation |
Result1 |
BYTE USINT SINT |
Value in BYTE (LSB) |
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Result2 |
BYTE USINT SINT |
Value in BYTE (MSB) |
Operation
When this block has a TRUE value in EN, it interprets the Value value as WORD and converts it in two BYTE variables, 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 "VAL_IN", in WORD, in two BYTE values storing the final result in RESULT1 and RESULT2. The block ends with success and ENO output is activated.
Example in ST
The example below displays the instructions for applying the example above in the ST language.
VAR VAL_IN : INT := 256; RES_1 : SINT; RES_2 : SINT; END_VAR
DO1 := FB_WORD_TO_BYTES( EN:=DI1, Value:=VAL_IN, Result1=>RES_1, Result2=>RES_2);
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