D-66
API Mnemonic Operands Function
31 ROL P D, n Rotate to the Left
Type
OP
Bit Devices Word devices Program Steps
X Y M K H KnX KnY KnM T C D ROL, ROLP: 5 steps
D * * * * *
n
* *
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 left for n bits.
2. This instruction adopts pulse execution instructions (ROLP).
Program Example:
When X0 goes from Off to On, the 16 bits (4 bits as a group) in D10 will rotate to the left, as shown in
the figure below. The bit marked with ※ will be sent to carry flag M1022.
X0
D10 K4
111 11 100 0 0011 000
11000001100110111
16 bits
Rotate to the left
After one rotation
to the left
Carry
flag
Carry
flag
D10
D10
upper bit
upper bit
lower bit
lower bit
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