Delta VFD11AMS21AFSHA, User Manual

Page: 392 / 445

Chapter 16 PLC Function Applications

MS300
(High Speed Model)
16-61
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.
X0
D10 K4
1 1 1 1 1 1 0 0 0 0 0 1 1 0 0 0
1 1 0 0 0 0 0 1 1 0 0 1 1 0 1 1 1
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