Step Ladder Instructions; Applied Instructions - Mitsubishi Electric MELSEC FX3U Programming Manual

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
3.2

Step Ladder Instructions

Mnemonic Name
STL Step Ladder
RET Return
3.3 Applied Instructions ... in Ascending Order of FNC Number
Applied instructions such as Arithmetic operation, Rotation and Shift, Handy instructions etc. are used
especially when numeric data is handled.
*1: The instruction is provided in the FX
*2: The function is changed in the FX
*3: The instruction is provided in the FX
*4: The function is changed in the FX
FNC No. Mnemonic
Program Flow
00 CJ
01 CALL
02 SRET
03 IRET
04 EI
05 DI
06 FEND
07 WDT
08 FOR
09 NEXT
Move and Compare
10 CMP
70
Symbol
STL Applicable devices
RET
/FX Series Ver.3.00 or later. *5: The instruction is provided in the FX
2N 2NC
Series Ver.1.30 or later.
3UC
Series Ver.1.30 or later.
3UC
Series Ver.2.20 or later.
3UC
Symbol
Conditional Jump
CJ Pn
Call Subroutine
CALL Pn
Subroutine Return
SRET
Interrupt Return
IRET
Enable Interrupt
EI
Disable Interrupt
DI
Main Routine Program End
FEND
Watchdog Timer Refresh
WDT
Start a FOR/NEXT Loop
FOR S
End a FOR/NEXT Loop
NEXT
Compare
CMP S1 S2 D
Function
Starts step ladder
Completes step ladder
*6: The instruction is provided in the FX
*7: The instruction is provided in the FX
later.
Function
3 Instruction List
3.2 Step Ladder Instructions
Applicable devices Reference
S Chapter 35
– Chapter 35
Series Ver.2.20 or later.
3UC
Series Ver.1.10 or later.
3G
/FX Series Ver.2.61 or
3U 3UC
Applicable PLC
Reference
Section
8.1
Section
8.2
Section
8.3
Section
8.4
Section
8.5
Section
8.6
Section
8.7
Section
8.8
Section
8.9
Section
8.10
Section
9.1