The blocks contained in the <Bit_Util> library can be used to edit bit stream data types on bit level.
NOTE:
Term definition: Standard = non-safety-related
The term "standard" always refers to non-safety-related items. Examples: a standard process data item is only read/written by a non-safety-related I/O device (i.e., a standard device). Standard variables/functions/FBs are non-safety-related data. The term "standard controller" designates the non-safety-related controller.
NOTE:
The Bit Utility library provides safety-related and standard blocks. Note that standard functions/function blocks are only allowed for programming standard program parts. When programming a safety-related application, a strict separation between safety-related and standard logic (networks) is required.
Available bit manipulation functions
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Function |
Description |
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Reads the value of a particular bit in a bit string |
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Reads the value of the LSB of a bit string |
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Reads the value of the MSB of a bit string |
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Inverts a particular bit in a bit string |
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Resets a particular bit in a bit string to FALSE |
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Sets a particular bit in a bit string to TRUE |
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Writes a given value to the LSB of a bit string |
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Writes a given value to the MSB of a bit string |
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Interchanges LSB and MSB of a bit string |
Available bit manipulation function blocks
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Function block |
Description |
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Assembling / splitting FBs for BOOL/BYTE/WORD/DWORD data types |
