The Siemens 6GT2191-1BH50 is a pre-assembled spiral communication cable for the SIMATIC RF identification system, specifically designed to connect an MV320 read/write head to an RF120C communication module. It's a coiled cable with a working length that stretches from 1.6 m to 4 m, so you get the reach you need in a tight panel or along a conveyor line without a loose loop to snag. Rated for a maximum of 300 V, this cable handles the signal-level voltages typical in RFID reader applications. The braided shield of tin-plated copper wires keeps electrical noise off the data lines — important when you're running this near motor drives or contactors on the same machine.
Connectors and mechanicals
One end terminates in a 9-pole submin-D male connector; the other is an RJ-50. That submin-D plugs directly into the MV320 reader, and the RJ-50 goes to the RF120C module. The cable jacket is black TPE-E, which holds up to flexing and the temperature range of -25 to +70 °C across operation, storage, and transport. Four cores inside, each insulated per DIN 47100. The spiral design gives you an 800 mm relaxed length that extends 1:4, so the cable self-retracts when not pulled taut — keeps the installation tidy.