Mitsubishi FX3U-16CCL-M User Manual

16 Troubleshooting
16.1 Troubleshooting procedure
239
FX3U-16CCL-M User's Manual
11
Programming
12
Remote I/O Communication Example
13
Remote Device Communication Example
14
Int. Device Communication Example
15
Compound Sys. Communication Example
16
Troubleshooting
A
Version Information
B
Setting Sheet
C
Differences with FX
2N
-16CCL-M
Data cannot be written to
remote register (RWw) in an
intelligent device station.
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 written to the correct address of remote register
RWw (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 link cannot be stopped.
Is the data link stop (SB0002) ON? Confirm the sequence program.
Has an error occurred? Check the data link stop result (SW0045).
Data link cannot be restarted.
Is the data link restart (SB0000) ON? Confirm the sequence program.
Has an error occurred? Check the data link restart result (SW0041).
Is the corresponding station disconnected?
Check the cable connection visually or with a
line test.
A remote stations/intelligent
device stations cannot start up.
Are the settings consistent between the station
information (parameter) and the remote station?
Confirm the contents of the parameters.
Does the station number overlap with another unit? Check the station number setting switch.
Faulty stations cannot be
detected.
Are stations specified as error invalid ones? Confirm the contents of the parameters.
Does the station number overlap? Check the station number.
Faulty stations occur
depending on the transmission
speed.
Can faulty stations be detected by the communication
status in other stations (SW0080)?
• Check the switch settings in the faulty
station.
• Check whether the cable wiring is correct.
• Check whether the cable shield is
grounded.
• Connect the terminal resistor that matches
the cable type used to the terminal stations
located at each end of the CC-Link system.
Is normal communication established when the
transmission speed is slowed (to 156 k bps, for
example)?
Trouble description Details to be checked Confirmation method

Mitsubishi FX3U-16CCL-M Specifications

General

Brand	Mitsubishi
Model	FX3U-16CCL-M
Category	Controller
Language	English