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MELSEC-Q
4 SETTINGS AND PROCEDURES FOR OPERATION
4.2.1 LED Display
The QJ71AS92 LEDs display the following details.
LED name
Coler
Details
RUN
green
Lit when the module is normally operating.
On = Normal operation
Off = Hardware error detected or power not supplied.
U ASI
green
Lit when AS-i power is supplied.
On = Power is supplied from AS-i bus.
Off = Power is not supplied from AS-i bus.
CM
yellow
Lit when the module is operating in configuration mode.
On = Configuration mode or parameters being stored.
Off = Protected operation mode
ERR.
red
Lit when an error occurs.
On = Alarm detected.
Example) Slave address alarm, parameter error and so forth.
Off = Alarm not detected.
PRG ENA.
yellow
Lit when automatic slave address assignment function is ready.
(See Section 4.5.4)
On = Ready.
Off = Not ready
S ERR.
red
- (for future use)
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