MqttConnectWithCertFile (FB)

FUNCTION_BLOCK MqttConnectWithCertFile EXTENDS AbbETrig3

Establish a Connection to the MQTT broker using a certificate from a file

InOut:

Scope	Name	Type	Initial	Comment
Input	Conn	POINTER TO MQTT_CONNECTION	0	Pointer to empty / uninitialized MqttConnection struct. Upon successful completion of this FB, this struct can be used to operate all other MQTT FBs.
	IpAddress	STRING(Constants.MQTT_MAX_IP_ADDRESS_LEN)	Defaults.MQTT_DEFAULT_EMPTY	IP address of the MQTT Broker.
	Port	WORD	Defaults.MQTT_DEFAULT_PORT	Port number of the MQTT Broker.
	Secure	BOOL	Defaults.MQTT_DEFAULT_SECURE	True = Use secure channel for communication (TLS).
	ServerCert	STRING(Constants.MQTT_MAX_FILE_PATH_LEN)	Defaults.MQTT_DEFAULT_EMPTY	Path to the file which contains the server certificate in PEM format.
	ClientCert	STRING(Constants.MQTT_MAX_FILE_PATH_LEN)	Defaults.MQTT_DEFAULT_EMPTY	Path to the file which contains the client certificate in PEM format (optional).
	ClientKey	STRING(Constants.MQTT_MAX_FILE_PATH_LEN)	Defaults.MQTT_DEFAULT_EMPTY	Path to the file which contains the client private key in PEM format (optional).
	ClientId	STRING(Constants.MQTT_MAX_CLIENT_ID_LEN)	Defaults.MQTT_DEFAULT_EMPTY	Client Identifier used to identify the client and the related session.
	Username	STRING(Constants.MQTT_MAX_USERNAME_LEN)	Defaults.MQTT_DEFAULT_EMPTY	Username of a user used by the MQTT Broker.
	Password	STRING(Constants.MQTT_MAX_PASSWORD_LEN)	Defaults.MQTT_DEFAULT_EMPTY	Password for this user.
	LastWill	MQTT_MESSAGE		Optional Last Will message.
	KeepAlive	WORD	Defaults.MQTT_DEFAULT_KEEPALIVE	Time in seconds, which will be passed to the MQTT Broker and which is normally used by the Broker to disconnect clients if no communication was made for 1,5 * KeepAlive
	Timeout	WORD	Defaults.MQTT_DEFAULT_TIMEOUT	Timeout in ms for all network communication of the following Function Blocks: MqttConnectWithCertBuffer, MqttConnectWithCertFile, MqttDisconnect, MqttPing, MqttPublish, MqttSubscribe, MqttUnsubscribe. If the FB did not receive any communication for that amount of time it will terminate the execution and return MQTT_ERR_COMMUNICATION_TIMEOUT error.
Output	ErrorID	ERROR_ID	ERROR_ID.MQTT_ERR_NO_ERROR	Error code description