Specifications

7 - 8 7 - 8
7. TROUBLESHOOTING
7.4 Flow when the "ERR." LED of the master module flashes
Failure of the corresponding
module
YES
NO
Do the parameter
setting and the installed system
configuration match
properly?
YES
NO
Are the master
station link special registers
SW0080 to SW0083 (other
station data link status)
turned on?
YES
NO
Are the master
station link special registers
SW0098 to SW009B (station
number overlap status)
turned on?
YES
YES
NO NO
Are the
station number setting
switches set
properly?
Is the power on?
YES
NO
Is the "PW" LED lit?
NO
Check the modules for which
SW0098 to SW009B are on
Check the modules for which
SW0080 to SW0083 are on
Corresponding module
malfunction
Revise the parameter settings
or installed system configuration
Master station malfunction
Set the station number setting
switches properly
Turn on the power
YES
NO
Do the parameter
and module match in
CC-Link version?
Corresponding module
malfunction
Reset the module
1) 2) 3)
The "ERR." LED on the master
station is flashing.
YES
NO
Are the master
station link special registers
SW0144 to SW0147 (mounted/
parameter natching status
(2)) turn on?
Is the supplied
power within the specified
range?
Set the supplied voltage to
within the specified range
Check the modules for which
SW0144 to SW0147 are on
Check on master station side
Check on slave station side
Reset the module
YES
Match the version of the
corresponding module and
that of the parameter