Safety relay / DIN rail
Siemens Industrial Communication
Redundant protection of automation cells by means of router and firewall redundancy and stand-by mode of the redundant device; status matching of the firewall by means of a synchronization cable between the yellow ports.
Two additional slots for one 2-port media module each (see SCALANCE X-300) for direct integration in ring structures and FO networks with two additional switched red or green ports per module.
Bridging of longer cable runs or use of existing 2-wire cables (e.g. PROFIBUS) by deploying MM992-2VD media modules.