LED Indicator

The LED indicator is situated on the connector side of the unit according tot he following figure:

 

 

Some of the states must be implemented by using EXT programming library. For more information about EXT programming library, refer to Epec programming and libraries manual.

 

The LED has green and red indicators and they indicate different operating conditions according to the following table:

 

LED State

LED 1

Implemented in device firmware or hardware

Implement by using in device CODESYS runtime or code template

Explanation

OFF

-

X

 

No supply voltage

Power ON

Red LED is constantly ON

X

 

Supply voltage is on, software is not running.

Boot-up

Yellow LED is constantly ON

X

 

There is no application or runtime. ApplicationLoader has nothing to start-up.

CODESYS runtime status

Green LED is constantly ON

 

X

CODESYS application stopped or update is in progress

CODESYS application status

Green LED blinks 2 times/second

 

X

CODESYS application running and SystemOk TRUE

CODESYS application status

Red LED blinks 2 times/second

 

X

CODESYS application running and SystemOk FALSE

 No CODESYS Application

Green LED blinks 5 times/second

 

X

CODESYS runtime is running, no PLCopen application

Rescue

Blue LED constantly ON

X

 

Rescue is initializing

Firmware update

Red/Green LEDs blink alternately

X

 

Firmware update in progress

ApplicationException

Red LED constantly ON

X

 

Application exception, for example, division by zero.