SendMessage
This method is called once to send a (push) message to the broker. This message is then displayed in the app. This is not a message that is visible as a push message on the mobile phone.
Syntax
METHOD SendMessage : BOOL
VAR_INPUT
sMessage : STRING(255);
END_VAR
Return value
Name | Type | Description |
|---|---|---|
SendMessage | BOOL | The method returns the return value TRUE if the call was successful. |
Inputs
Name | Type | Description |
|---|---|---|
sMessage | STRING | Text of the (push) message to be sent to the broker. |
Possible errors are output at the outputs bError and hrErrorCode of the function block instance.
 | Strings in UTF-8 format The variables of type STRING used here are based on the UTF-8 format. This STRING formatting is common for MQTT communication. In order to be able to receive special characters and texts from a wide range of languages, the character set in the Tc3_IotCommunicator library is not limited to the typical character set of the data type STRING. Instead, the Unicode character set in UTF-8 format is used in conjunction with the data type STRING. If the ASCII character set is used, there is no difference between the typical formatting of a STRING and the UTF-8 formatting of a STRING. |