User manual

GI--KWIK--ENG

Modicon Micro Quick-Start

Step 4. Front Panel Indicators

Below is a list of the front panel LED indicators and what their

meanings are at FIRST TIME power up of the Micro. If your

indicators are other than those indicated below, refer to the

Hardware User Manual for specific information.

Power OK LED Red and ON when power is applied to the

Micro, OFF when no power is present or

wiring is incorrect.

Ready LED Amber and ON when controller is OK and

has passed internal diagnostics.

Run LED Green and flashing at power up (not

configured), when the Micro has been put

into the “Run” mode.

Batt Low LED Red and ON if optional battery or Battery

Capacitor is not installed, or if the lithium

battery needs to be replaced (see note in

Step 6 about Battery Options).

Comm1 LED OFF unless Micro is connected to a

computer or Hand-held Programmer;

green and flashing when communicating

with either device.

I/O Expan. Link OFF on power-up; solid green if link is

communicating with another Micro;

flashing green when a communications

error is detected.

Input LEDs (1 -- 16) Red and OFF or ON, depending on

the status of the sensors attached.

Output LEDs (1 -- 12) OFF.