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Data Shift Instructions Section 3-8
If as a result of the shift the contents of the leftmost bit of Wd + 1 is 1, the Neg-
ative Flag will turn ON.
Note It is possible to set the Carry Flag contents to 1 or 0 immediately before exe-
cuting this instruction, by using the Set Carry (STC(040)) or Clear Carry
(CLC(041)) instructions.
Examples When CIO 0.01 is ON, word CIO 2000, CIO 2001 and the Carry Flag (CY) will
shift one bit to the left. The contents of CIO 2001.15 will be shifted to the
Carry Flag (CY) and the Carry Flag contents will be shifted to CIO 2000.00.
3-8-11 ROTATE RIGHT: ROR(028)
Purpose Shifts all Wd bits one bit to the right including the Carry Flag (CY).
Ladder Symbol
Variations
Applicable Program Areas
Operand Specifications
0.01
2000
Instruction executed once
Wd+1: CIO 2001 Wd: CIO 2000
Wd
ROR(028)
Wd: Word
Wd
Variations Executed Each Cycle for ON Condition ROR(028)
Executed Once for Upward Differentiation @ROR(028)
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
Area Wd
CIO Area CIO 0 to CIO 6143
Work Area W0 to W511
Holding Bit Area H0 to H511
Auxiliary Bit Area A448 to A959
Timer Area T0000 to T4095
Counter Area C0000 to C4095
DM Area D0 to D32767
Indirect DM addresses
in binary
@ D0 to @ D32767
Indirect DM addresses
in BCD
*D0 to *D32767
Constants ---
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