SendMQTTMessage (FB)¶

FUNCTION_BLOCK SendMQTTMessage

Function block for sending D2C messages via MQTT to Azure IoT Hub.

InOut:

Scope	Name	Type	Initial	Comment
Input	xExecute	BOOL		Rising edge will send the message |pbPayload|
	udiTimeOut	UDINT		Time out in µs, 0: no time out
	pbPayload	POINTER TO BYTE		Pointer to the message
	udiPayloadSize	UDINT		Size of the message |pbPayload|
	sPropertyBag	STRING(Param.g_uiPropertyBagLength)		Property bag (optional) Example: RFC 2396-encoded(<PropertyName1>)=RFC 2396-encoded(<PropertyValue1>)&RFC 2396-encoded(<PropertyName2>
	eMqttQoS	MQTT_QOS	MQTT_QOS.QoS1	The QoS used in MQTT message
Inout	azureMQTTClient	AzureMQTTClient		Reference to AzureMQTTClient
Output	xError	BOOL		TRUE, if an error occurred
	xBusy	BOOL		TRUE, while sending the message
	xDone	BOOL		TRUE, if the message was sent successfully
	eError	MQTT.MQTT_ERROR		Error code