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Data Shift Instructions Section 3-9
Flags
Precautions When the shift data length (N) is 0, the contents of the beginning bit will be
copied to the Carry Flag (CY), and its contents will not be changed.
Only the bits shifted into rightmost word in the shift area (i.e. leftmost word
data) will be changed.
Examples When CIO 000000 is ON, all bits from the beginning bit 3 to the shift data
length (B hex) will be shifted one bit to the left (from the rightmost bit to the
leftmost bit). “0” will be placed into bit 3 of CIO 0100. The contents of the left-
most bit in the shift area (bit 13 of CIO 0100) are copied into the Carry Flag
(CY).
3-9-20 SHIFT N-BIT DATA RIGHT: NSFR(579)
Purpose Shifts the specified number of bits to the right.
Ladder Symbol
Variations
Applicable Program Areas
Name Label Operation
Error Flag ER ON when C data is not between 0000 and 000F hex.
OFF in all other cases.
Carry Flag CY ON when 1 is shifted into the Carry Flag (CY).
OFF in all other cases.
0
D: CIO 0100
D: CIO 0100
&3
&11
D
C
N
C: Starting from bit 3
N: 11 bits
NSFR(579)
D
C
N
D: Beginning word for shift
C: Beginning bit
N: Shift data length
Variations Executed Each Cycle for ON Condition NSFR(579)
Executed Once for Upward Differentiation @NSFR(579)
Executed Once for Downward Differentiation Not supported
Immediate Refreshing Specification Not supported
Block program areas Step program areas Subroutines Interrupt tasks
OK OK OK OK
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