MELSEC FX
The FX Family
SYSTEM DESCRIPTION
Features
The modular design of the FX
0N
/FX
2N
series makes it extremely flexible, ena-
bling it to be used for a very broad range
of applications.
You can configure tailor-made systems
by combining modules from a variety of
different categories (see figure).
All modules are electrically isolated from
their environment with optocouplers for
maximum reliability.
Digital I/O modules
For a variety of signal levels
with relay or transistor
switches.
F
X
BASICS
DIGITAL
INPUTS/OUTPUTS
COMMUNI-
CATIONS
MODULES
CPU
POSITIONING
MODULES
ANALOG
INPUTS/
OUTPUTS
Communications modules
Interface modules with
RS-232/RS-422/RS-485 interfaces
for the connection of peripherals
and PLC鈥揚(yáng)LC links. Network
modules for Profibus, GSM and for
the configuration of proprietary
Mitsubishi networks
Positioning modules
High-speed counter modules with support
for the connection of incremental rotary
transducers and positioning modules for
servo and stepping motor drives.
Analog I/O modules
For processing current/voltage
signals and temperature
registration with a direct
connection option for Pt100
resistance thermometers and
thermocouples.
Digital and special function modu-
les 鈥?configuration
The options for using digital and special
function modules are dictated by CPU
used in the system.
When calculating the number of special
function modules you can use in a system
you must take both the number of digital
modules and the maximum number of
special function modules that can be used
into account.
The table on the right provides a simpli-
fied guide to the number of modules you
can use in each system type. More de-
tailed information and the basic principles
of system configuration can be found on
page 21 ff.
CPU type
FX0S
FX0N
FX2N
System restrictions
Stand-alone PLC with 10 / 14 / 20 or 30 I/Os;
no special function modules
PLC with max.128 I/Os;
max.2 special function modules supported
PLC with max.256 I/Os;
max.8 special function modules
MITSUBISHI ELECTRIC
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