What is the purpose of Lag_Filter function block in Unity Pro.
Lag_Filter function block performs an internal initialization in the first program cycle after a warm start or cold start (e.g. application download or power cycle) of the PLC program. Due to this, you have to make sure that the function block is invoked in the first program cycle. In case of inkoving the function block in a later program cycle, the internal initialization will not be performed and the ouput may deliver a wrong value.