SubscribeMQTTMethods2 (FB)¶

FUNCTION_BLOCK SubscribeMQTTMethods2 EXTENDS CBML.LCon

Function block to subscribe MQTT methods. This function blocks can return payload of methods.

InOut:

Scope	Name	Type	Initial	Comment	Inherited from
Input	`xEnable`	`BOOL`		`TRUE`: Activates the defined operation `FALSE`: Aborts/resets the defined operation	LCon
Output	`xDone`	`BOOL`		`TRUE`: Ready condition reached	LCon
	`xBusy`	`BOOL`		`TRUE`: Operation is running	LCon
	`xError`	`BOOL`		`TRUE`: Error condition reached	LCon
Input	`pbMethodPayload`	POINTER TO BYTE		Pointer to method input payload buffer
	`udiMaxMethodPayloadSize`	`UDINT`		Maximum size of pbMethodPayload
	`pbOutputPayload`	POINTER TO BYTE	0	Pointer to output payload JSON-String e.g. POINTER TO STRING(255)
	`itfMethodInvoker`	IMethodInvoker2		Method invoker
Inout	`azureMQTTClient`	AzureMQTTClient		Reference to AzureMQTTClient
Output	`eError`	`MQTT.MQTT_ERROR`		Error code
Output	`udiPayloadSize`	`UDINT`		Length of the device twin