153
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
7 Basic Instruction
1
In
troduct
io
n
2
Ov
e
rv
ie
w
3
In
st
ru
ct
ion
Li
st
4
D
evi
ce
s
in
De
ta
il
5
Speci
fied t
h
e
D
evi
ce &
C
onst
a
nt
6
Bef
o
re
Pr
ogr
a
m
m
ing
7
Bas
ic
In
st
ru
cti
o
n
8
FNC0
0
-FNC0
9
P
ro
g
ra
m F
lo
w
9
FNC1
0
-FNC1
9
M
ov
e
&
C
om
par
e
10
FNC
20-
FNC
2
9
Ar
ith.
&
Logi
c
O
per
at
io
n
7.
Basic Instruction
This chapter explains types and functions of basic sequence instructions.
For beginners of sequence control, we can offer texts for learning "Introduction Course" and "Relay Ladder
Course". Refer to them.
We can offer also the PLC learning software "Beginner Course".
Mnemonic
Name
Symbol
Function
Applicable devices
Reference
Contact Instruction
LD
Load
Initial logical operation
contact type NO (normally
open)
X,Y,M,S,D
.b,T,C
Section 7.1
LDI
Load Inverse
Initial logical operation
contact type NC (normally
closed)
X,Y,M,S,D
.b,T,C
Section 7.1
LDP
Load Pulse
Initial logical operation of
rising edge pulse
X,Y,M,S,D
.b,T,C
Section 7.5
LDF
Load Falling Pulse
Initial logical operation of
falling/trailing edge pulse
X,Y,M,S,D
.b,T,C
Section 7.5
AND
AND
Serial connection of NO
(normally open) contacts
X,Y,M,S,D
.b,T,C
Section 7.3
ANI
AND Inverse
Serial connection of NC
(normally closed) contacts
X,Y,M,S,D
.b,T,C
Section 7.3
ANDP
AND Pulse
Serial connection of rising
edge pulse
X,Y,M,S,D
.b,T,C
Section 7.5
ANDF
AND Falling Pulse
Serial connection of falling/
trailing edge pulse
X,Y,M,S,D
.b,T,C
Section 7.5
OR
OR
Parallel connection of NO
(normally open) contacts
X,Y,M,S,D
.b,T,C
Section 7.4
ORI
OR Inverse
Parallel connection of NC
(normally closed) contacts
X,Y,M,S,D
.b,T,C
Section 7.4
ORP
OR Pulse
Parallel connection of
rising edge pulse
X,Y,M,S,D
.b,T,C
Section 7.5
ORF
OR Falling Pulse
Parallel connection of
falling/trailing edge pulse
X,Y,M,S,D
.b,T,C
Section 7.5
Applicable devices
Applicable devices
Applicable devices
Applicable devices
Applicable devices
Applicable devices
Applicable devices
Applicable devices
Applicable devices
Applicable devices
Applicable devices
Applicable devices