Delta AH500 - Explanation of Rotation Instructions

AH500 Programming Manual
6-216
6.10.2 Explanation of Rotation Instructions
API Instruction code Operand
Function
0900 D ROR P
D, n
Rotating to the right
Device
X Y M S T C HC D L SM SR E PR K 16# “$” DF
D
         
n
       
Pulse instruction 16-bit instruction (5 steps) 32-bit instruction (5 steps)
AH500 AH500 AH500
Symbol:
D
：
Device which is rotated Word/Double word
n
：
Number of bits forming a
group
Word/Double word
Explanation:
1. The values of the bits in the device specified by D are divided into groups (n bits as a group),
and these groups are rotated to the right.
2. Only the instruction DROR can use the 32-bit counter.
3. The operand n used in the 16-bit instruction should be within the range between 1 and 16. The
operand n used in the 32-bit instruction should be within the range between 1 and 32.
4. Generally, the pulse instructions RORP and DRORP are used.
Example:
When X0.0 is switched from OFF to ON, the values of the bits in D10 are divided into groups (four
bits as a group), and these groups are rotated to the right. (The value of the bit marked ※ is
transmitted to the carry flag SM602.)