The Siemens 6GT2801-4AB10 is a SIMATIC RF300 series RFID reader (RF350R) designed to read and write RF300-specific and ISO 15693 transponders (MDS Dxxx) at 13.56 MHz over an RS422 interface using the 3964R protocol. It operates without an integrated antenna — instead it connects to one external antenna via an M8, 4-pin connector (antenna wire fixed at 3 m) and communicates to a controller through an M12, 8-pin connector. The reader is multitag-incapable, meaning it addresses one transponder at a time, which is typical for point-of-read stations on a production line where tag collision isn't a concern. Read and write access times are both 0.13 ms per byte, with a maximum transfer rate of 106 kbit/s over the air. The RS422 interface supports cable runs up to 1000 m, giving flexibility for reader placement far from the controller in a large plant. The operating frequency and protocols (RF300-specific, ISO 15693, ISO 18000-3) mean it works with Siemens MDS Dxxx transponders and standard ISO 15693 tags used in logistics and production tracking.
The MTBF of 140 years is a calculated reliability figure under controlled conditions, not a guarantee of service life. For a continuous-operation production line running 24/7, this translates to a very low expected failure rate — a practical consideration for MRO planners stocking spares for critical identification points where downtime for replacement would be costly. Power draw is 0.1 A typical at 24 V DC (20.4 to 28.8 V range), so it can share a standard 24 VDC control transformer with other panel devices without a dedicated supply. The 3-color LED display gives immediate visual status — power, communication activity, or read success — useful for commissioning engineers walking the line to confirm reader operation without a laptop.
This class of RFID reader is deployed on production lines for workpiece identification — tracking pallets, carriers, or assemblies through machining, assembly, and test stations. The RF300 protocol is Siemens' proprietary high-speed RFID system for automotive powertrain and body-in-white lines where cycle times are under a second. The ISO 15693 compatibility also allows use with standard HF tags in warehouse logistics or tool crib tracking. The RS422 interface with 3964R protocol ties directly into Siemens SIMATIC S7 controllers via communication modules like the RF180C or RF120C. The reader is fastened with 2 x M5 screws and measures 75 × 75 × 41 mm in anthracite PA12 plastic. It's panel-mount or bracket-mount — no DIN rail clip, so plan for screw-down mounting in a junction box or on a machine frame near the read point. The 3 m fixed antenna cable limits antenna placement to within 3 m of the reader body.