CPUs (312 IFM, 313, 314, IFM, 314, 315, 315-2DP, 316-2DP, 318 Signal Modules (SM), Digital I/O (SM321/322/323), Analog I/O (SM331/332/334) Function modules (FM) ex Positioning modules, Closed Loop Communication Processor ex CP 342-5 DP for Profibus Interface module – For interconnecting individual racks (IM 360/ 361, IM365 S / R)