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Type
| Function |
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Description
| Performs a bitwise left shift operation on the operand connected to the input IN. N specifies the number of bits to be shifted. The empty bit positions are filled with zeros. |
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Notes
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- Overloaded function. The function can operate on various input data types.
- When shifting with N < 0, the function delivers the output value 0 because the parameter N is always considered as an unsigned integer value.
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Parameters
| Inputs
 IN
| Data type: | ANY_BIT |
| Description: | Input value. |
N
| Data type: | ANY_INT |
| Description: | Number of bits to be shifted. |
Output
OUT
| Data type: | ANY_BIT |
| Description: | Output value. |
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| Error behavior | Error behavior
The following table shows the errors which may occur while executing the function and the value returned by the function in the corresponding error case.
| Error case | Output value |
| N < 0 | 0 |
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Example
| Bitwise left shifting of 3 bits
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Additional information
| EN/ENO behavior
The POU is only executed if TRUE is applied to the EN input. If EN = FALSE, the POU is not executed and ENO = FALSE indicates the inactivity.
If any of the errors listed under "Error behavior" occurs while executing the function, ENO is set to FALSE.
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