TO_TIME block
Short summary
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Name |
TO_TIME |
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→POU type |
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Category |
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Conform to →IEC-standard |
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Graphical interface |
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Available since |
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more possible than defined in IEC-standard and
Functionality
The blocks serves for explicitly converting the value connected to input IN into a value of data type TIME.
If the connected value is within the range of values overlapping for the data type of the input and for the result value TIME, the blocks returns this value.
Observe:
If a value of data type DATE_AND_TIME or DATE is connected to the input, this value is converted to seconds, relative to the lower limit D#1970-01-01 of DATE and the lower limit DT#1970-01-01-00:00:00.000_000_000 of DATE_AND_TIME respectively.
If converting data types to the TIME data type and vice versa, the conversion is always based on seconds.
Explicit conversion according to IEC-standard
The IEC-standard defines an explicit conversion of the following data types to TIME:
LTIME
This data type LITME is currently not supported in logi.CAD 3.
Inputs, return value
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Identifier |
Description |
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Inputs: |
IN |
REAL, LREAL, USINT, UINT, UDINT, ULINT, SINT, INT, DINT, LINT, TIME, BOOL, BYTE, WORD, DWORD, LWORD, DATE_AND_TIME, DATE or TIME_OF_DAY |
value to be converted |
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Return value: |
– |
TIME |
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Input EN and output ENO are available when →calling the block. See "Execution control: EN, ENO" for information on input EN and output ENO.
See:
"Blocks for safe logic" whether this block is supported for developing safety-relevant applications.
"Highlighting safe logic in the FBD-editor" for the effects when using the block as a block for safe logic .
Example for usage within ST-editor
PROGRAM Test VAR result : TIME; END_VAR result := TO_TIME(IN := SINT#12); (* The variable 'result' evaluates to value 'T#12s' of TIME. *)END_PROGRAMWhen creating your application within the ST-editor, enter a call of a block by typing the text as requested by the syntax or use Content Assist.