Delta C2000 Series User Manual page 556

API
ROL
31
D P
Bit device
X Y M K
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
Rotates the device designated by
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.
Carry
flag
Carry
flag
D n
Word device
H KnX KnY KnM T
: Device to be rotated.
X0
upper bit
1 1 1
upper bit
1 1 1 1
Chapter 16 PLC Function Applications
Left rotation
16-bit command (5 STEP)
ROL Continuous
C D
execution type
32-bit command (9 STEP)
DROL Continuous
execution type
Flag signal: M1022
n
: Number of bits for one rotation.
D
to the left
D10 K4
Rotate to the left
1 1 1 1 1 0 0 0 0
16 bits
After one rotation
to the left
1 0 0 0 0 0 0 0 0
16-65
C2000 Series
ROLP Pulse
execution type
DROLP Pulse
execution type
Carry flag
n
bits.
lower bit
D10
0 0 0 0
lower bit
D10
1 1 1 1