FB_sACN

This function block enables sending and receiving of sACN data frame. With the help of the function block FB_UDP_Communication, frames can be sent and received via UDP.

Because Send and Receive methods are asynchronous, they need more than one cycle to finish working. Only one method could be invoked at the same time. Therefore, always check the output parameter bBusy when calling these methods.

Syntax

FUNCTION_BLOCK FB_sACN IMPLEMENTS I_sACN
VAR_OUTPUT
    bBusy                              : BOOL;
    bError                             : BOOL;
    bCommunicated                      : BOOL;
    ipResultMessage                    : I_TcMessage;
END_VAR

VAR_OUTPUT

bBusy: Is set if an sACN frame is being sent/received.

bError: Is set if an error occurs. You can find error details included Error ID in the “Error List” window.

bCommunicated: Is set after the first sACN frame is successfully sent or received. More information can be found at section Status indicator.

ipResultMessage: Enables error handling with the Tc3_EventLogger.

METHODS

FB_init: Initialization method.

Send: Sending sACN frames (sACN-2009).

Receive: Receiving sACN frames.

INTERFACE

I_sACN: Defines the interface of send and receive methods.

Further Information