Chapter 5 Instruction Specifications
5-74
Item number
Application instructions-5
Name
Shift left
Ladder format
Condition code
Processing time (
µ
s)
Remark
R7F4
R7F3
R7F2
R7F1
R7F0
Average Maximum
SHL (d, n)
DER
ERR
SD
V
C
Upper case: W
z
z
z
z
↕
38
Lower case: DW
Instruction format
Number of steps
Condition
Steps
SHL (d, n)
3
46
Bit
Word
Double word
Usable I/O
X
Y
R,
M
TD, SS,
CU, CT
WX WY
WR,
WM TC DX DY
DR,
DM
C
o
nstant
Other
d
I/O to be shifted
{
{
{
{
{
n
Number of bits to be
shifted
{
{
{
{
{
The constant is set in
decimal.
Function
•
Shifts the contents of d to the left (toward the upper digits) by n bits.
•
Sets n bits of SD (R7F2) contents starting with the least significant bit.
•
Sets the content of the nth bit from the most significant bit in C (R7F0).
SD
B
SD SD
SD
SD
SD
SD (R7F2)
C (R7F0)
B
d
n bits
Most significant bit (MSB)
Least significant bit (LSB)
Before execution
After execution
n bits
If d is a word:
Designates the shift amount, depending on the contents (0 to 15) of the lower 4 bits (b3 to b0) of n
(WX, WY, WR, WM, TC). (Upper bits are ignored and considered as “0.”)
The n (constant) can be set to 0 to 15 (decimal).
If d is a double word:
Designates the shift amount, depending on the contents (0 to 31) of the lower 5 bits (b4 to b0) of n
(WX, WY, WR, WM, TC). (Upper bits are ignored and considered as “0.”)
The n (constant) can be set to 0 to 31 (decimal).
Notes
•
If n is equal to “0,” the shifting is not performed. The previous state is retained in C.
Program example
X00000
LD
X00000
OUT
R7F2
LD
X00001
AND
DIF1
[
SHL
(DR0000,1)
]
LD
R7F0
OUT
Y00100
X00001
DIF1
SHL
(DR0000 ,1 )
R7F2
R7F0
Y00100
Program description
•
The R7F2 value is determined by the on/off of X00000.
•
The content of DR0000 is shifted to the left by one bit when X00001 rises.
At this time, the value of R7F2 is set in b0 and the value of b31 (b15 of WR1) in R7F0.
•
The Y00100 turns on/off depending on the b31 value of DR0000 (b15 of WR1) prior to the shift.
S
H
L (d,
n)
Summary of Contents for HIDIC MICRO-EH
Page 1: ...HITACHI PROGRAMMABLE CONTROLLER APPLICATION MANUAL NJI 350B X ...
Page 12: ...MEMO ...
Page 14: ...Chapter 1 Features 1 2 MEMO ...
Page 50: ...Chapter 4 Product lineup and wiring 4 18 MEMO ...
Page 196: ...Chapter 5 Instruction Specifications 5 146 ...
Page 263: ...Chapter 11 Communication Specifications 11 10 MEMO ...