Polling operation process - making polled data station receive text rather than transmit it.

摘要

The data network has several connection points. The data transmission procedures operate according to a polling and selecting process principle. Instead of a polling call according to the polling principle, a selecting process call is sent to a data network data station affected by the polling. A data transmission phase following a positive acknowledgement with the contents of a status communication through the relevant data station is immediately broken off again without data transmission. ADVANTAGE - Does not require additional hardware to process data station operating condition information. Network activation phase is reduced. No data blockages occur in network or controlling as result of long delays.