Newton-Willbanks Engineering, Inc.

Mitsubishi PLC for Dummies

Links to Manuals

Mitsubishi Home Page

GX Developer Version 8 Startup Manual

GX Developer Version 8 Operating Manual

CPU A2A Programming Fundamentals Manual

Termininlogy

1) Devices are memory locations. Devices include:

X - Inputs

Y - Outputs

T - Timers

D - Integers

M - Bits

2) Constants and Presets:

Preceded by "K" when decimal

Preceded by "H" when hexadecimal

3) Timers:

Compared to Allen-Bradley PLC5, Mitubishi timers are all time delay-on and don't have "DN", "PRE", or "ACC".

4) Instruction Comparison to PLC5:

AB Mitsubishi

XIC LD (or AND)

XIO ANI

MOV MOV

OTE OUT

OTL SET

OTU RST

FLL FMOV

COP BMOV

AND WAND

OR WOR

XOR WXOR

EQU LD=

LES LD<

LEQ LD<=

GRT LD>

GEQ LD>=

NEQ LD<>