Chapter 16 PLC Function Applications│CP2000
16-73
API
ROL
D n
Left rotation
31
D P
Bit device Word device
16-bit command (5 STEP)
ROL Continuous
execution type
ROLP Pulse
execution type
32-bit command (9 STEP)
DROL Continuous
execution type
DROLP Pulse
execution type
Flag signal: M1022 Carry flag
X Y M K H KnX KnY KnM T C D
D
＊ ＊ ＊ ＊ ＊
n
＊ ＊
Notes on operand usage:
Only K4 (16-bit) will be valid if the operand D is designated as KnY
or KnM.
n operand n=1 to 16 (16-bit)
D
: Device to be rotated.
n
: Number of bits for one rotation.
Rotates the device designated by
D
to the left
n
bits.
This command is ordinarily used as a pulse execution type command (ROLP).
When X0=Off→On, 4 of the 16 bits in D10 specify a left rotation; the content of the
bit indicated with * (see figure below) will be sent to the carry flag signal M1022.
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