Led Display - Mitsubishi Electric MELSEC-Q Series User Manual

7 FUNCTION

7.16 LED Display

LED name
Indicates Basic model QCPU operation status.
On : When operating with the RUN/STOP/RESET switch at "RUN".
Off : When stopped with the RUN/STOP/RESET switch at "STOP".
Flicker : When writing parameters ad program during STOP, and when setting the RUN/STOP/RESET
RUN
Indicates Basic model QCPU error detection status.
On : When a self-diagnosis error that does not stop the operation is detected. (Set the operation error
ERR.
Off : Normal
Flicker : When an error that stops the operation is detected.
Indicates the 5VDC output status of the power supply built in the Q00JCPU.
POWER On : Normal output of 5VDC
Off : PLC power off or 5VDC output error
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The LEDs that indicate the operation statuses of the Basic model QCPU are provided
on the front panel of the Basic model QCPU. The indications of the LEDs are
described below.
(1) The details of the LED display are shown below:
Or when an error that stops operation is detected.
switch from [STOP] [RUN]. Perform the following operations in order to illuminate the RUN
LED after program writing.
• Set the RUN/STOP/RESET switch to [RUN]
• Reset the system with the RUN/STOP/RESET switch.
• Switch on the power to the PLC again.
Perform the following operations in order to illuminate the RUN LED after parameter writing.
• Reset the system with the RUN/STOP/RESET switch.
• Switch on the power to the PLC again.
(When the RUN/STOP/RESET switch has been set to [RUN]
parameters have been amended, the parameters related to intelligent function modules and
other network parameters will not be reflected back.)
set mode to "continue" in the parameter mode PLC RAS setting.)
When the CPU is reset with the RUN/STOP/RESET switch. Goes off on completion of reset.
Display Description
[STOP]
MELSEC-Q
[RUN].
[STOP] [RUN] after the
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