Appendix B: Instruction List; Appendix B-1 Basic Instructions; Appendix B-2 Step Ladder Instructions - Mitsubishi FX3U SERIES User Manual

FX Series Programmable Controllers
3U
User's Manual - Hardware Edition

Appendix B: Instruction List

Appendix B-1 Basic Instructions

Mnemonic
Contact Instruction
Initial logical operation contact type NO (normally
LD
open)
Initial logical operation contact type NC (normally
LDI
closed)
LDP Initial logical operation of Rising edge pulse
LDF Initial logical operation of Falling/trailing edge pulse
AND Serial connection of NO (normally open) contacts
ANI Serial connection of NC (normally closed) contacts
ANDP Serial connection of Rising edge pulse
ANDF Serial connection of Falling/trailing edge pulse
OR Parallel connection of NO (normally open) contacts
ORI Parallel connection of NC (normally closed) contacts
ORP Parallel connection of Rising edge pulse
ORF Parallel connection of Falling/trailing edge pulse
Connection Instruction
ANB Serial connection of multiple parallel circuits
ORB Parallel connection of multiple contact circuits
Stores the current result of the internal PLC
MPS
operations
Reads the current result of the internal PLC
MRD
operations
Pops (recalls and removes) the currently stored
MPP
result
Invert the current result of the internal PLC
INV
operations
MEP Conversion of operation result to leading edge pulse
MEF Conversion of operation result to trailing edge pulse
*1. Supported in Ver. 2.30 or later

Appendix B-2 Step Ladder Instructions

Mnemonic
STL Starts step ladder
RET Completes step ladder
458
Function
Function
Mnemonic
Out Instruction
OUT Final logical operation type coil drive
SET SET Bit device latch ON
RST RESET Bit device OFF
PLS Rising edge pulse
PLF Falling/trailing edge pulse
Master Control Instruction
MC Denotes the start of a master control block
MCR Denotes the end of a master control block
Other Instruction
NOP No operation or null step
End Instruction
END Program END, I/O refresh and Return to Step 0
*1
*1
B Instruction List
B-1 Basic Instructions
Function