Rievtech PR-12 Series, User Manual And Programmers Manual

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6.13.6 ROR -DW & ROL -DW
Input/output Operand Data type
IN (LAD, FBD) VD, ID, QD, MD, SD, SMD, LD, AC, HC,constant, *VD, *LD, *AC Double word
N VB, IB, QB, MB, SB, SMB, LB, AC,constant, *VD, *LD, *AC Byte
OUT VD, ID, QD, MD, SD, SMD, LD, AC, *VD, *LD, *AC Double word
ROR -DW & ROL -DW :Instruction rotates the input
double word to the right or to the left n bits and puts the
result in the output double word (OUT).Rotation is cyclic.
If N is greater than or equal to 32,the remainder of N/32
is the number of rotation bits.If remainder is equal to 0
，
Rotation operation is not performed and the value of
SM1.0 is 1.If the rotation operation is performed, the
final rotation bit is copied to overflow bit (SM1.1).
ROR -DW& ROL -DW operations are not signed.
error conditions:
0006 Indirect address
Special memory bit:
SM1.0 When the value of the loop is zero, SM1.0 is set to 1.
SM1.1 Overflow bit
Example: