What This Cable Is For
The Siemens 6GT2191-0AH50 is a pre-assembled spiral communication cable that connects an RF170C read/write device to an MV340 or MV325 identification module. It is part of the SIMATIC RF family, designed for RFID-based identification systems in industrial automation. The cable is coiled, giving a working length from 1.6 m to 4 m — the spiral stretches to 4 m and retracts to 800 mm at rest. This keeps the cable tidy in tight cabinets or along moving machine sections while still reaching the reader.
Connector Fit and Routing Constraints
One end terminates in an M12 male, 8-pin, straight connector; the other end is an MV340 connector (male, 8-pin). That means it plugs directly into the MV340/MV325 module on one side and into the RF170C on the other — no adapter needed. The 4-core spiral cable uses a braided shield of tin-plated copper wires, so it handles electrical noise in industrial environments without additional ferrite. Maximum tensile load is 5.6 N, so pull the cable into position gently — yanking it can damage the internal conductors or the M12 coupling nut.
The 4 m working length and M12/MV340 connector set are fixed — there is no field-configurable length or connector swap, so verify your panel layout distances before specifying.