Hitachi NJI-350B User Manual
Page 94
Chapter 5 Instruction Specifications
5-44
Item number
Basic instructions-35
Name
Signed
≤ Relational box (SIGNED ≤ RELATINAL BOX)
Ladder format
Condition code
Processing time (
µ
s)
Remark
R7F4
R7F3
R7F2
R7F1
R7F0
Average Maximum
(See Function column)
DER
ERR
SD
V
C
z
z
z
z
z
Command format
Number of steps
37.5
53
LD
(s1 S<= s2)
Condition
Steps
AND
(s1 S<= s2)
Double word
(See Cautionary notes)
OR
(s1 S<= s2)
Bit
Word
Double word
Usable I/O
X
Y
R,
L,
M
TD, SS,
WDT, MS,
TMR, CU,
RCU, CT
WX WY
WR,
WL,
WM
TC DX DY
DR,
DL,
DM
C
o
ns
ta
nt
Other
s1 Relational number 1
{
{
{
{
s2 Relational number 2
{
{
{
{
Function
[Ladder format]
s1
S<=
s2
s1
S<=
s2
s1
S<=
s2
z
Compares s1 and s2 as signed double-word numbers, and
if s1 is less than or equal to s2, it enters the continuity status (on) and
if s1 is greater than s2, it enters the noncontinuity status (off).
z
s1, s2
– 2147483648 to + 2147483647 (decimal)
H80000000 to H7FFFFFFF (hexadecimal)
b31
b0
Sign bit: 0 - Positive; 1 - Negative
Cautionary notes
[Number of steps]
Double word
LD, AND (s1S<=s2)
OR (s1S<=s2)
I/O
I/O
5 steps
6 steps
I/O
Constant
6 steps
7 steps
Constant
I/O
6 steps
7 steps
Constant
Constant
7 steps
8 steps
Program example
R008
DR0000
S < =
DR0002
LD (DR0000 S<= DR0002)
OUT R008
Program description
z
When DR0000
≤ DR0002, R008 turns on (signed).
LD
(s
1 S
<= s
2)
A
N
D
(s
1 S
<=
s2
)
OR
(s1
S <
=
s2
)