Distributed ET 200iSP remote I/O stations are connected to the automation systems (controllers) via the PROFIBUS DP, which can be routed intrinsically-safe into Ex‑zone 1 using an isolating transformer (RS 485‑iS coupler) as barrier. Data transfer rates of up to 1.5 Mbps are possible. The ET 200iSP remote I/O stations can be connected to the controller as DP V0 slave or DP V1 slave.

The ET 200iSP remote I/O stations are integrated into the SIMATIC PCS 7 process control system using standard driver blocks.

The existing standard diagnostics drivers process the diagnostics messages generated by internal or external faults (e.g. wire breakage or short-circuit) as well as status messages of the connected HART field devices for the host operator system and the SIMATIC PCS 7 maintenance station.

Vendor-specific information and maintenance data are saved powerfail-proof on the electronics modules.