1-Bit Shift To Right Or Left Of N-Bit Data (Bsfr(P),Bsfl(P)) - Mitsubishi MELSEC Q Series Programming Manual

7.3.2

1-bit shift to right or left of n-bit data (BSFR(P),BSFL(P))

BSFR(P),BSFL(P)
BSFR, BSFL
BSFRP, BSFLP
Setting
Data
D
n
Function
BSFR
(1) Shifts the data in n points from the device designated by
D +(n-1)
1
+(n-1)
D
0
(2) The device designated by
BSFL
(1) Shifts the data in n points from the device designated by
Carry flag
(SM700)
1
(2) The device designated by
Command
Command
: Head number of the devices to be shifted (bits)
D
n : Number of devices to which shift is executed (BIN 16 bits)
Internal Devices
R, ZR
Bit Word
n
+2
D +(n-2) D +(n-3) D
1 0 1
+(n-2) +(n-3) +2
D D D
1 1 0
Filled with 0
+ (n
D
+(n-2)
+(n-1)
D D D
1 1
+(n-2)
D +(n-1) D D
1 0
is filled with 0.
D
High
Basic
performance
indicates an instruction symbol of BSFR/BSFL.
J \
U \G
Bit Word
––
to the right by one bit.
D
D +1 D
1 0
Carry flag
D +1 D
(SM700)
1 1
1) is filled with 0.
to the left by one bit.
D
+(n-3) +2 +1
D D
0 0 1
+(n-3) +2 +1
D D
0 1 1
BSFR(P),BSFL(P)
Process
Redundant Universal LCPU
n
D
P
n
D
Constants
Zn Other
K, H
––
––
0
D
1
D
0
Filled with 0
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