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User_leds_éCOCKPIT_runtime.md

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User leds (é!COCKPIT runtime)

General

It's possible to control the U leds on a WAGO PFC controller. The example below illustrates how.

Prerequisites

the following libaries should be present:

  • WagoAppAppLED
  • WagoTypesAppLED

Implementation

The project has a working implementation that controls the U1 led, displaying it green when there is a working connection with the MQTT broker, flashing red if not.

  • variables initiation (inside PLC_PRG_MQTT):
LED_1_BrokerStatus		:FbAppLED;
  • controlling the led depending on connection with the MQTT broker
LED_1_BrokerStatus(eID:=eLedID.AppLED_1, xOpen:=TRUE );
IF(MQTTClient.connected) THEN
	LED_1_BrokerStatus.SetStatic(eLedColor.Green);
ELSE
	LED_1_BrokerStatus.SetFlash(T#1S,eLedColor.Red, eLedColor.Off);  
END_IF

The code has been commented out to prevent interference with users that work with the CODESYS 3S runtime.