Filter
Top Products
176
FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
7 Basic Instruction
7. Basic Instruction
This chapter explains types and functions of basic sequence instructions.
For beginners to sequence control, we offer "Introduction Course" and "Relay Ladder Course" learning texts for
reference.
We can also offer 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