15 - 10
MELSEC-Q
15 TROUBLESHOOTING
15.3 List of errors
The following table shows the error details and remedies to be taken when an error
occurs.
Classification
of errors
Error
code
Error name Error Operation status at error occurrence
— 000 (Normal status) — —
001 Faults
Fatal errors
002 Internal circuit fault
Hardware is faulty. The system stops.
101
PLC READY OFF
during operation
A PLC READY signal (Y0) is turned
OFF during operation.
The system stops with the setting
(deceleration stop/sudden stop) of the
detailed parameter 2 Sudden stop
selection (stop group 2).
(Note that the deceleration stop only
occurs during the manual pulse
generator operation.)
The drive unit READY signal is
turned OFF during operation.
The system stops immediately.
102
Drive unit READY
OFF
The start of an operation is
requested when the drive unit
READY signal is OFF.
The system does not start.
103
Test mode faults
during operation
The personal computer cannot
communicate with the CPU unit.
The system stops with the setting
(deceleration stop/sudden stop) of the
detailed parameter 2 Sudden stop
selection (stop group 2).
(Note that the deceleration stop only
occurs during the manual pulse
generator operation.)
The hardware stroke limit (upper limit
signal FLS) is turned OFF during
operation.
The system stops with the setting
(deceleration stop/sudden stop) of the
detailed parameter 2 Sudden stop
selection (stop group 1).
(Note that the deceleration stop only
occurs during the manual pulse
generator operation.)
Common
104
Hardware stroke
limit (+)
The start of an operation is
requested when the upper limit
signal (FLS) is OFF.
The system does not start.
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