Abstract: A time sensitive network (TSN) simulator for connecting a first device of a distributed control system (DCS) for an industrial plant to at least one second device of the DCS that is configured as a TSN client, comprising a first interface that is connectable to the first device; a second interface that is connectable to the second device; and a simulation unit that is configured to forward network traffic between the first interface and the second interface and to modify and/or delay network traffic during this forwarding, thereby simulating the behavior of a real, non-perfect TSN that provides communication between the first device and the second device.