Hello and in this tutorial I will show you how to implement a MQTT Client to subscribe to the topics by TwinCAT TF6701. Reference Link: Function Blocks Here the function blocks that are used will be explained. FB_IotMqttClient.Subscribe This method is used by the client to Subscribe a topic to the broker that it wants to receive.Multiple topics are supported also. VAR_INPUT Name  Type  Description sTopic  STRING  Topic of the … Continue reading Beckhoff#Using TwinCAT TF6701 to Subscribe Topics