Part Identity & Function
The Siemens 6GT2891-0EH20 is a preassembled connecting cable for the SIMATIC RF300 RFID system, linking the ASM 475 evaluation unit to the read/write head. At 2 m length, it's a fixed-length drop ready to go between the reader and its controller — no field termination, no connector guesswork.
Deployment Context
This cable lives between the ASM 475 interface module and the RF300 reader head in an RFID read station. It's the physical link that carries both power and data — no separate power supply wiring needed at the reader end. The 2 m length suits compact stations where the reader sits within a couple meters of the controller cabinet; for longer runs you'd step up to a different preassembled length in the same family.