Appendix D How to Use PLC Function|
D-56 Revision Jan. 2009, 06EE, SW--PW V1.12/CTL V2.12
API Mnemonic Operands Function
30
ROR P D, n Rotate to the Right
Bit Devices Word devices Program Steps Type
OP
X Y M K H KnX KnY KnM T C D
D * * * * *
n
* *
ROR, RORP: 5 steps
Operands:
D: Device to be rotated n: Number of bits to be rotated in 1 rotation
Explanations:
1. This instruction rotates the device content designated by D to the right for n bits.
2. This instruction adopts pulse execution instructions (RORP).
Program Example:
When X0 goes from Off to On, the 16 bits (4 bits as a group) in D10 will rotate to the right, as shown
in the figure below. The bit marked with ※ will be sent to carry flag M1022.
01110101 00111 001
010111001111001 0
0
upper bit lower bit
upper bit lower bit
*
X0
RORP
D10 K4
Rotate to the right
16 bits
Carry
flag
Carry
flag
After one rotation
to the right
D10
D10
API Mnemonic Operands Function
31
ROL P D, n Rotate to the Left
Bit Devices Word devices Program Steps Type
OP
X Y M K H KnX KnY KnM T C D
D * * * * *
n
* *
ROL, ROLP: 5 steps
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