SIPLUS ET 200SP IM155-6PN HF based on 6ES7155-6AU01-0CN0 with conformal coating, -40…+60 °C, 2-port interface module 1 slot for BusAdapter, max. 64 I/O modules, and 16 ET 200AL modules, S2 redundancy, multi hot swap, 0.25 ms, isochronous mode, optional PN strain relief, including server module (6AG1193-6PA00-7AA0)