Change-Driven Send of Data

Data are always sent when the value of the input variables changes. When changes take place, there is an internal simulation that the SEND pin changed from 0 to 1.

In order to prevent unnecessarily frequent send in the event of mild fluctuations in the input value, a threshold value can be configured for real values and setpoints. The input value is not sent until it differs positively or negatively from the value last sent by more than the threshold value.

If the input value changes again although no acknowledgement has yet been received from the receiver, the OV pin is set in exactly the same way as in connection with send via the request pin. If an error occurs during send, the job is automatically retried until the value has been sent without error.