Mitsubishi FX3U User Manual

16 Troubleshooting
16.1 Troubleshooting procedure
238
FX3U-16CCL-M User's Manual
Remote input (RX) in an
intelligent device station
cannot be received.
Is the intelligent device station executing data link?
Check the following:
• Check the LED display on the
corresponding intelligent device station.
• Check the other station data link status of
the master station (SW0080).
Is data read from the correct address of remote input
RX (buffer memory)?
Confirm the sequence program.
Is the corresponding station set as a reserved station?
Check the following:
• Check the parameters.
• Check the reserved station specified status
(SW0074).
Does the station number overlap?
Check the following:
• Check the station number setting.
• Check the loading status (SW0069).
• Check the station number overlap status
(SW0098).
Do the settings match?
Check the following:
• Check the loading status (SW0069).
• Check the station number overlap status
(SW0098).
• Check the loading/parameter consistency
status (SW009C).
Remote output (RY) in an
intelligent device station
cannot be set to ON or OFF.
Is the intelligent device station executing data link?
Check the following:
• Check the LED display on the
corresponding intelligent device station.
• Check the other station data link status of
the master station (SW0080).
Is the refresh command output (BFM#10 b0) ON in the
master station?
Confirm the sequence program.
Is data written to the correct address of remote output
RY (buffer memory)?
Confirm the sequence program.
Is the corresponding station set as a reserved station?
Check the following:
• Check the parameters.
• Check the reserved station specified status
(SW0074).
Does the station number overlap?
Check the following:
• Check the station number setting.
• Check the loading status (SW0069).
• Check the station number overlap status
(SW0098).
Do the settings match?
Check the following:
• Check the loading status (SW0069).
• Check the station number overlap status
(SW0098).
• Check the loading/parameter consistency
status (SW009C).
Data in remote register (RWr)
in an intelligent device station
cannot be received.
Is the intelligent device station executing data link?
Check the following:
• Check the LED display on the
corresponding intelligent device station.
• Check the other station data link status of
the master station (SW0080).
Is data read from the correct address of remote register
RWr (buffer memory)?
Confirm the sequence program.
Is the corresponding station set as a reserved station?
Check the following:
• Check the parameters.
• Check the reserved station specified status
(SW0074).
Does the station number overlap?
Check the following:
• Check the station number setting.
• Check the loading status (SW0069).
• Check the station number overlap status
(SW0098).
Do the settings match?
Check the following:
• Check the loading status (SW0069).
• Check the station number overlap status
(SW0098).
• Check the loading/parameter consistency
status (SW009C).
Trouble description Details to be checked Confirmation method

Mitsubishi FX3U Specifications

General

Series	FX3U
Program Capacity	64k steps
Type	PLC
Power Supply	AC: 100-240V, DC: 24V
I/O Points	Up to 384 points
Communication	RS-232C, USB, Ethernet
Expansion	Supports multiple expansion modules including I/O, analog, and communication modules
Programming Language	Ladder Logic, SFC, Function Block Diagram
High-speed Processing	0.065 μs per basic instruction
Analog I/O	Available with expansion modules
Positioning Control	Up to 3 axes of positioning control
Weight	0.3 kg (Main unit)