Delta C200 Series User Manual page 339

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API
ROL
31
Bit Devices
X Y M
D
n
Operands:
D: if in KnY and KnM, only K4 (16-bit) is valid
n: n=K1~K16 (16-bit)
E xplanation
Example
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D n
P
Word Devices
K H KnX KnY KnM T
＊ ＊
＊ ＊
1. D: Device to be rotated; n: Number of bits to be rotated in 1 rotation
2. This instruction rotates the device content designated by D to the left for
n bits.
3. This instruction adopts pulse execution instructions (ROLP).
When X0 goes from Off to On, the 16-bit (4 bits as a group) in D10 will rotate to
the left, as shown in the figure below. The bit marked with
flag M1022.
X0
Carry
flag
1
Carry
flag
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Chapter 14 PLC Function |C200 Series
Rotate to the Left
16-bit command (5 STEPS)
ROL
C D
＊ ＊ ＊
32-bit command
－
Flag signal: M1022 Carry flag
D10 K4
Rotate to the left
upper bit
1 1 1 1 1 1 1 1 0 0
16 bits
After one rotation
to the left
upper bit
1 1 1 1 0 0 0 0 0 0
14-54
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ROLP
－ － －
will be sent to carry
※
lower bit
0 0 0 0 0 0
D10
lower bit
0 0 1 1 1 1
D10
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