SIMATIC S7-300, front connector for signal modules with screw contacts, 20-pole, 100 pieces per packaging unit. SIMATIC ET 200M is a modular and universally applicable peripheral system for the control cabinet in IP20, which can be used both as central peripheral equipment 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 in per station. The standardized design of all modules significantly simplifies logistics and spare parts management. Accessories for SIMATIC S7-300.