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Bit-shift instructions
F122_RCR
Rotates n bits of the 16-bit data specified by d including the data of carry-flag to the right if the
Description
trigger EN is in the ON-state.
This example rotates one bit to the right:
Bit position
15
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
D
Bit position
15
D
0 0 1 0 1 0 1 0 1 0 1 0 1 0 1
When n bits with carry-flag data are rotated to the right,
the data in bit position n-1 (nth bit starting from bit position 0) are transferred to
special internal relay R9009 (carry-flag).
n bits starting from bit position 0 are shifted out to the right and carry-flag data
and n-1 bits starting from bit position 0 are subsequently shifted into the higher
bit positions of the 16-bit data specified by d.
This instruction also exists as a P instruction (for FP2/2SH, FP3/5, FP10/10SH PLC types), which
is only executed at the rising edge of the EN trigger. Select [Insert P instruction] from the
"Instructions" pane if you require a P instruction. To facilitate reuse, the instruction then appears
under "Recently used" in the pop-up menu. Press <Ctrl>+<Shift>+<v> within the programming
area to open the list of recently used elements.
Availability of F122_RCR (see page 1320)
PLC types
Data types
Variable
Data type
ANY16
d
INT
n
Operands
For
d
n
590
16-bit data right rotate with carry-flag data
1211
8 7
4 3
· · ·
· ·
· ·
· ·
1211
8 7
4 3
· · ·
· ·
· ·
· ·
Carry flag data "0"
Special internal relay
R9009 (carry flag)
Function
16-bit area
number of bits to be rotated
Relay
-
WY
WR
WL
WX
WY
WR
WL
0
0
0
1
T/C
Register
SV
EV
DT
LD
FL
SV
EV
DT
LD
FL
Constant
-
dec. or hex.
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