The Transmission Control Protocol (TCP) is a network protocol that defines the transmission of data between two network devices. The protocol is based on the internet protocol (IP) and works connection-oriented between two endpoints. It is characterized by its reliability which is one of the key benefits of TCP communication.

How to use TCP for a reliable communication between AC500 V3 devices and how the various libraries can be used for a AC500 V3 PLC to act either as TCP client or TCP server is desribed in an ‎⮫ application example.