For connecting MGB2 or MCM modules Connection to PROFINET with PROFIsafe Connection via plug connector M12, D-coded and L-coded Remote or direct mounting Integrated switch Compatible with all Modular devices PROFINET interface Plug connector M12, D-coded (M12 plug, L-coded, and M12 plug, D-coded, according to IEC 61076-2-101) PROFINET switch Linear topology network structure due to integrated switch (supports MRP). MLI connections (module plug connector) An MGB2 Modular or an MCM Modular can be connected directly to a bus module (direct plug). Alternatively, the modules can be connected using commercially available connecting cables M12, 5-core (cable connect).