4-48 Series 90-30/20/Micro Programmable Controllers Reference Manual – September 1998 GFK-0467K
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The following bit operation functions are described in this section:Abbreviation Function Description Page
AND Logical AND If a bit in bit string I1 and the corresponding bit
in bit string I2 are both 1, place a 1 in the
corresponding location in output string Q.
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OR Logical OR If a bit in bit string I1 and/or the corresponding
bit in bit string I2 are both 1, place a 1 in the
corresponding location in output string Q.
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XOR Logical exclusive
OR If a bit in bit string I1 and the corresponding bit
in string I2 are different, place a 1 in the
corresponding location in the output bit string.
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NOT Logical invert Set the state of each bit in output bit string Q to the
opposite state of the corresponding bit in bit string I1. 4-53
SHL Shift Left Shift all the bits in a word or string of words to the left
by a specified number of places. 4-55
SHR Shift Right Shift all the bits in a word or string of words to the right
by a specified number of places. 4-55
ROL Rotate Left Rotate all the bits in a string a specified number of
places to the left. 4-58
ROR Rotate Right Rotate all the bits in a string a specified number of
places to the right. 4-57
BTST Bit Test Test a bit within a bit string to determine whether that
bit is currently 1 or 0. 4-60
BSET Bit Set Set a bit in a bit string to 1. 4-62
BCLR Bit Clear Clear a bit within a string by setting that bit to 0. 4-62
BPOS Bit Position Locate a bit set to 1 in a bit string. 4-64
MSKCMP Masked Compare Compare the contents of two separate bit strings with
the ability to mask selected bits (available for Release
4.5 or higher CPUs).
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