Rockwell Automation AutoMax Enhanced Ladder Language Reference Manual - Manual (Page 175)

9Ć1
9.0 Shift Register Instructions
Use the Shift Register instructions to store, extract, and manipulate binary data.
The Shift Register instructions can help you:
D track parts or product
D record barĆcode information
D control machinery or processes
D track and record system diagnostic information
Choose from these instructions:
Use this instruction: To:
Shift Left (SL) Shift out to the left the most significant bit and
load either a 1 or 0 into the least significant bit
position.
Circular Rotate Bits Left (ROL) Rotate a specified number of the most significant
bits into the least significant bit positions while
the instruction is enabled.
Circular Rotate Bits Left on Transition (RL) Rotate a specified number of the most significant
bits into the least significant bit positions for each
falseĆtrue transition of the enable bit.
This instruction performs the same operation as
ROL, but it is edgeĆtriggered.
Shift Right (SR) Shift out to the right the least significant bit and
load either a 1 or 0 into the most significant bit
position.