30
FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
2 Overview (Sequence Program)
2.4 Link and Communication
2.4 Link and Communication
FX3G/FX3U/FX3UC PLCs support the following communication functions:
1. CC-Link
The CC-Link system can be constructed with an
FX
3G/FX3U/FX3UC PLC working as the master
station.
An A or QnA PLC can work as the master
station, and FX PLCs can be connected as
remote device stations.
A Q PLC can work as the master station, and FX
PLCs can be connected to remote device
stations or intelligent device stations.
The CC-Link is an open network allowing
connection of not only FX PLCs but also
inverters, AC servo systems, and sensors.
→ Refer to the included manual.
2. CC-Link/LT
The CC-Link/LT system can be constructed with
an FX
3G/FX3U/FX3UC PLC working as the master
station.
General X (input) and Y (output) devices are
assigned to remote I/O units, and operated by
programs for general-purpose I/O.
→ Refer to the FX
3UC Hardware Edition for the
built-in type CC-Link/LT master.
→ Refer to the product manual for the FX
2N-
64CL-M.
3. MELSEC I/O LINK
The MELSEC I/O LINK is a remote I/O system
whose
master station is an FX3U/FX3UC (D, DSS)
PLC.
Units for MELSEC I/O LINK remote I/O system
(A PLCs) can be used as remote units.
→ Refer to the included manual.
4. AS-i system
A network system at the actuator or sensor level
can be constructed with an FX
3U/FX3UC PLC
working as the master station in the AS-i system.
→ Refer to the included manual.
5. Simple N : N link
Up to eight FX3G/FX3U/FX3UC PLCs are
connected, and data are automatically
transferred among them.
→ Refer to the Data Communication Edition.
6. Parallel link
Two PLCs are connected, and data are
automatically transferred between them.
→ Refer to the Data Communication Edition.
7. Computer link
A computer such as personal computer works as
the master station, up to sixteen FX and A PLCs
are connected to the master station, the master
station directly specifies devices in the PLCs,
and then data are transferred.
Protocols in the computer link support the
formats 1 and 4.
By using MX Component and MX Sheet,
monitoring and logging for the PLC system can
be easily set by Microsoft Excel.
→ Refer to the Data Communication Edition.
→ For MX Component and MX Sheet, refer to
the respective product manual.
8. No-protocol communication
No-protocol serial communication is available
between an FX PLC and interface equipment in
accordance with RS-232C/RS-485 such as bar
code reader, printer, personal computer and
measuring instrument.
→ Refer to the Data Communication Edition.
9. Inverter communication
An FX PLC can control up to eight inverters via
communication in accordance with RS-485.
→ Related instructions: IVCK (FNC270)
IVDR (FNC271)
IVRD (FNC272)
IVWR (FNC273)
IVBWR (FNC274)
→ Refer to the Data Communication Edition.
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