Technical introduction

The AES70 specification describes objects representing functions and device states. These objects are handled with TwinCAT using function block methods. Each object has a unique object number that is defined by the device manufacturer.

For each AES70-compatible device, an instance of the function block FB_OcaDevice has to be called cyclically. The function block establishes the connection via TCP/IP. The parameterization of the function block (IP address, port etc.) is explained in the Example for using the function block FB_OcaDevice. After calling the function block instance, you must call the methods of those function blocks that represent objects in the AES70-compatible device, for example so-called worker objects such as OcaMute, OcaSwitch, and so on.