Mitsubishi Electric MELSEC FX Series - 2.2 Step Ladder Instructions; 2.3 Applied Instructions

2 Instruction List
2.2 Step Ladder Instructions
28
FXCPU Structured Programming Manual
(Basic & Applied Instruction)
2.2 Step Ladder Instructions
2.3 Applied Instructions
*1. The instruction is provided in the FXU PLC Ver. 2.30 or later.
*2. The instruction is provided in the FX
U PLC Ver. 3.07 or later.
*3. The 32-bit operations are provided in the FX
3U and FX3UC PLCs Ver. 2.20 or later.
*4. The instruction is provided in the FX
U PLC Ver. 2.10 or later.
*5. The instruction is provided in the FX
0N PLC Ver. 1.20 or later.
*6. Though programmed, this instruction is not valid because the FX
1NC or FX2NC PLC does not have a
volume to read out under this instruction.
*7. The instruction is provided in the FX
U and FX2C PLCs Ver. 3.30 or later.
*8. The instruction is not provided in the FX
U and FX2C PLCs Ver. 3.30 or later.
*9. The instruction is provided in the FX
3UC PLC Ver. 2.20 or later.
*10. The instruction is provided in the FX
2N and FX2NC PLCs Ver. 3.00 or later.
*11. The instruction is provided in the FX
3UC PLC Ver. 1.30 or later.
*12. The instruction is provided in the FX3G PLC Ver. 1.10 or later.
*13. The instruction is provided in the FX
3U and FX3UC PLCs Ver. 2.61 or later.
The FX
3UC-32MT-LT-2 PLC is due to be upgraded later.
Instruction name Function
Applicable PLCs
Reference
FX3U(C)
FX3G
FX2N(C) FX1N(C)
FX1S
FXU/FX2C
FX0N
FX0(S)
STL Starts step ladder 33333333Section 6.2
RET Completes step ladder 33333333Section 6.3
Instruction name
Execution
condition
Function
Applicable PLCs
Reference
FX3U(C)
FX3G
FX2N(C) FX1N(C)
FX1S
FXU/FX2C
FX0N
FX0(S)
Program Flow
CJ Continuous
Conditional jump
33333333
Section 7.1.1
CJP Pulse 333333
CALL Continuous
Call subroutine
333333
Section 7.1.2
CALLP Pulse 333333
SRET Continuous Subroutine return 333333 Section 7.1.3
IRET Continuous Interrupt return 33333333Section 7.1.4
DI Continuous Disable interrupt 33333333Section 7.1.5
EI Continuous Enable interrupt 33333333Section 7.1.6
FEND Continuous Main routine program end 33333333Section 7.1.7
WDT Continuous
Watchdog timer refresh
33333333
Section 7.1.8
WDTP Pulse 333333
FOR Continuous Start a FOR/NEXT loop 33333333Section 7.1.9
NEXT Continuous End a FOR/NEXT loop 33333333 Section 7.1.10