Troubleshooting Flow When The "Err." Led On The Master Station Is Flashing - Mitsubishi Electric Q81BD-J61BT11 User Manual

16 TROUBLESHOOTING

16.5.2 Troubleshooting flow when the "ERR." LED on the master station is flashing

The "ERR." LED of the
Q80BD-J61BT11N/Q81BD-J61BT11
is flashing
Do the parameter
settings and installed system
configuration match
correctly?
YES
Are the master
station link special registers
SW0080 to SW0083 (data link
status of other stations)
turned on?
YES
Are the master
station link special registers
SW0098 to SW009B (duplicate
station number status)
turned on?
YES
Check the module for which
SW0098 to SW009B are on
Are the station number
switches set correctly?
Set the station number
YES
switches correctly
Turn on the power again/turn
on the reset switch
Reset the master station
Doesn't it work normally?
YES
Corresponding module
failure
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(1) When the CC-Link Ver.2 board is used as the master board
NO
NO
Q80BD-J61BT11N/Q81BD-J61BT11
failure
NO
Check the module for which
SW0080 to SW0083 are on
NO
Is the power on?
YES
Is there
NO
a "POWER" LED on the
module?
YES
NO
Is the "POWER" LED
lit?
YES
Is the "RD" LED lit?
YES
1) 2)
1: Check for short circuits, reversed connections, disconnections, terminal resistors, FG
connections, overall distance, and distance between stations.
NO
Turn on the power
NO
Is the supplied
voltage within the specified
range?
Corresponding module
NO failure
Is the
NO
communication cable wired
correctly? 1
Correct the communication
YES
cable wiring
Corresponding module
failure
MELSEC
Correct the parameter
settings or installed
system configuration
Check the
Q80BD-J61BT11N/Q81BD-J61BT11
side
Check the slave station side
NO
YES
Set the supplied voltage
within the specified range
3)
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