When There Is A Communication Error Between Master Station And Aj65Bt-68Td - Mitsubishi Electric AJ65BT-68TD User Manual

6. TROUBLESHOOTING
6.6 When There is a Communication Error between Master Station
and AJ65BT-68TD
"ERR." LED of master
station flickers
Do the
parameter setting
and loading system
configuration
match?
Y
Is the
master station
link special register
SW0080 to SW0083 (other
station data link
status) turned
ON?
Y
Is the
master station
link special register
SW0098 to SW009B
(duplicate station
number status)
turned ON?
Y
Check the module whose
SW0098 to SW009B is ON
Is the station
number switch set
correctly?
Y
Corresponding module failure
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If the station number duplicate bit is turned on in the link special register SW0098 to SW009B
(duplicate station number status), check the corresponding station number of AJ65BT-68TD using the
following flow.
Troubleshooting flow when "ERR" LED of master station is flickering
N
Correct parameter setting or
loading system configuration
N
Master station failure
N
Check the module whose
SW0080 to SW0083 is ON
N
Set the station number
switch correctly
Restart the power supply/
Turn on the reset switch
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N
Is power supply
turned ON?
Turn the power ON
Y
N
Is "POWER"
LED lit?
Y
Is the supplied
voltage within the
specified range?
Y
Corresponding module failure
N
Is "RD" LED lit?
Are
Y
communication
cables connected
correctly?
Y
Corresponding module failure
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6-4
MELSEC-A
Check on the master side
Check on the AJ65BT-68TD side
N
Set the supplied voltage
within the specified range
N
*1
Correct the wiring of
communication cables
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