Expansion Options; Introduction; Available Modules; Modules For Adding More Digital Inputs And Outputs - Mitsubishi Electric FX2N Beginners Manual

Expansion Options

6 Expansion Options
6.1

Introduction

You can expand the base units of the MELSEC FX series with expansion modules and special
function modules.
These modules are divided into three categories:
b Modules that that occupy digital inputs and outputs (installed on the right of the controller).
These include the compact and modular digital expansion and special function modules.
b Modules that do not occupy any digital inputs and outputs (installed on the left side of the
controller).
b Interface and communications adapters that do not occupy any digital inputs and outputs
(installed directly in the controller unit).
6.2

Available Modules

6.2.1

Modules for adding more digital inputs and outputs

A variety of different modular and compact expansion modules are available for adding I/Os to
the MELSEC FX
to this, digital I/Os can also be added to the controllers of the FX
expansion adapters that are installed directly in the controller itself. These adapters are a par-
ticularly good choice when you only need a few additional I/Os and/or do not have enough
space to install expansion modules on the side of the controller.
The "modular" expansion units only contain the digital inputs and outputs, they do not have
their own power supplies. The "compact" expansion units have a larger number of I/Os and an
integrated power supply unit for the system bus and the digital inputs.
The available base units and expansion units can be mixed and matched in a huge variety of
different combinations, making it possible to configure your controller system very precisely to
the needs of your application.
6.2.2

Analog I/O modules

Analog I/O modules convert analog input signals to digital values or digital values to analog
output signals.
A number of modules are available for current/voltage signals and for temperature monitoring
with direct connections for Pt100 resistance thermometers or thermo elements.
A FX
3GE
4–20 mA in each case) without additional modules.
See Chapter 7 for an introduction to analog signal processing.
FX Beginners Manual
/FX /FX /FX
1N 2N 2NC
base unit can input two analog signals and output one analog signal (0–10 V or
/FX /FX /FX
3G 3GC 3GE 3U
Introduction
and FX base units. In addition
3UC
and FX series with special
1S 1N
6 – 1