Mitsubishi Electric AJ65BT-D62 User Manual

MELSEC-A
11. TROUBLESHOOTING
11 - 4
11.5 If Communication Error Occurs between Master Station and This Module
If any repeated station number bit in any of the link special registers SW0098 to
SW009B (repeated station number status) switches on, check the high-speed counter
module of the corresponding station number in the following flowchart.
Troubleshooting flowchart used when the "ERR." LED of the master station flickers
"ERR." LED of master station flickers
Parameter
setting match system
configuration?
Check the module corresponding
to the bit switched on.
Correct parameter setting
or system configuration.
Master station faulty
Station number switch
setting correct?
Correct station number switch setting.
Switch power on again
or turn on reset switch.
Corresponding module faulty
Check the module corresponding
to the bit switched on.
Power on?
"POWER" LED lit?
"RD" LED lit?
Switch power on.
Is supply voltage
within specified range?
Communication cable
wired correctly*1?
Corresponding module faulty
Corresponding module faulty
Set supply voltage to
within specified range.
Correct communication cable wiring.
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Y
N
Y
N
Y
N
Y
N
Y
N
Y
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Y
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Y
N
Y
N
Master side check
High-speed counter module side check
Any of master
station link special registers
SW0080 to SW0083 (other
station data link status)
ON?
Any of master
station link special registers
SW0098 to SW009B (repeated
station number status)
ON?
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Mitsubishi Electric AJ65BT-D62 Specifications

General

Brand	Mitsubishi Electric
Model	AJ65BT-D62
Category	Control Unit
Language	English