177
ED=, ED<>, ED>, ED<=, ED<, ED>=
1
2
3
4
6
7
8
6.1
C
ompar
ison Operat
ion In
str
uctions
6.1.4
E
D=, ED<>, ED>, ED<=
, E
D
<
, E
D
>=
,
: Data for comparison or head number of the devices where the data for comparison is stored (real number)
Function
(1) The 64-bit floating decimal point real number from device designated by and 64-bit floating decimal point real number from
device designated by as A normally-open contact, and performs comparison operation.
(2) The results of the comparison operations for the individual instructions are as follows:
Operation Error
(1) In any of the following cases, an operation error occurs, the error flag (SM0) turns ON, and an error code is stored into
SD0.
ED=, ED<>, ED>, ED<=,Floating-point data comparisons (Double precision)
ED<, ED>=
6.1.4
ED=, ED<>, ED>, ED<=, ED<, ED>=
Setting
Data
Internal Devices
R, ZR
J \
U \G
Zn
Constants
E
Other
Bit
Word
Bit
Word
––
––
––
––
––
––
––
––
Instruction
Symbol in
Condition
Comparison
Operation Result
Instruction
Symbol in
Condition
Comparison
Operation Result
ED=
=
Continuity
ED=
Non-continuity
ED<>
ED<>
=
ED>
>
ED>
ED<=
ED<=
>
ED<
<
ED<
ED>=
ED>=
<
Error
code
Error details
Q00J/
Q00/
Q01
QnH
QnPH QnPRH
QnU
LCPU
4140
The specified device value is not within the following range:
0, 2
-1022
|
Specified device value
|
< 2
1024
The specified device value is
-
0.
––
––
––
––
Universal
LCPU
Basic
High
performance
Process
Redundant
LD
AND
OR
S1
S1
S2
S1
S2
S2
Command
Command
Command
/ED
/ED
/E
/E
/E
indicates an instruction s
y
mbol of ED
S1
S2
S1
S2
S1
S2
S2
S1
S1
S2
S1
S2
S2
S1
S1
S2
S1
S2
S1
S2
S1
S2
S1
S2
S1
S2
S1
S2
S1
S2