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MELSOFT
7. SYSTEM CHECKING FROM PERIPHERAL DEVICE
HELPFUL OPERATION
When the upper/lower limit switch is turned off by JOG operation, the
corresponding axis stops. To restart the axis, perform the following operation.
1. Click [Online] → [Error Reset] → [Error Reset #1](
)/[Error Reset #2](
)/[Error Reset #3](
) menu.
2. Perform JOG operation to move the axis to within the upper or lower limit range.
HELPFUL CORRECTIVE ACTIONS
Take the following corrective actions when the upper/lower limit check cannot be
made.
Status Corrective Action
Check that the servo amplifier is powered.
Servo signal is OFF
Check the connection of the external I/O signal connector.
Check that the servo amplifier is powered.
Ready signal is OFF
Check the connection of the external I/O signal connector.
Alarm signal is ON Take the corrective action given in the servo amplifier installation guide.
Check the connection of the external I/O signal connector.
Upper/lower limit is OFF
Check for any object in contact with the upper/lower limit switch.
Stop signal is ON Turn off the external stop signal.
JOG operation cannot be
performed.
Check that JOG speed setting is not "0".
Error/warning occurred
Check the error/warning code using [Help] (refer to Section 12.11), and check and remove
the cause.