SIMATIC S7-300, Analog Input SM 331, single-channel isolated AC 250V, 6 inputs for thermocouples type B, E, J, K, L, N, R, S, T voltage: +/-25mV to +/-1V 16 Bit, 50ms, 1x 40-pin. SIMATIC ET 200M is a modular and universally applicable peripheral system for the control cabinet in IP20, which can be used both as a central peripheral for an S7-300 and in a decentralized setup with a PROFINET or PROFIBUS ET 200M interface module. Up to 12 I/O modules can be plugged into each station. The standardized design of all modules significantly simplifies logistics and spare parts management. ET 200M is suitable for both standard and safety-related applications. As peripheral assemblies (the interface to the process), up to 12 high-channel signal (e.g., 64 digital inputs) and function modules, as well as communication processors of the S7-300 can be used. Thus, the ET 200M also supports assemblies with extended payload data, such as HART assemblies with HART secondary variables. For easy wiring, the ET 200M offers, in addition to conventional connection techniques, the strip-free quick connection technology Fast Connect.