Rievtech PR-12 Series, User Manual And Programmers Manual

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6.13.3
SHR -DW & SHL -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 Double word
OUT VD, ID, QD, MD, SD, SMD, LD, AC, *VD, *LD, *AC Double word
SHR -DW: Input double word "IN" and move N bits towards
the right.Then place the results in OUT.
SHL -DW: Input double word "IN" and move N bits towards
the left.Then place the results in OUT.
The moved out bits are filled with zero.If N is greater than
or equal to 32, you can move up to 32bits.
SHR -DW & SHL -DW operations are signed. Symbol bit can
be moved.
error conditions:
0006 Indirect address
Special memory bit:
SM1.0 Zero Result
SM1.1 Overflow
Example:
When the value of M0.0 is 1,VD0 moves a bit towards the left and VD10 moves two
bits towards the right.