All SIMATIC RF600 readers are suitable for reliable writing and reading tasks in the UHF range from 865 to 868 MHz (ETSI), 902 to 928 MHz (FCC), and 920 to 925 MHz (CMIIT), with very large ranges up to 8 m.

The SIMATIC RF680R/685R readers are particularly suitable for use in production environments where a high protection class and integration into SIMATIC controllers are required. These two new readers also offer an extensive toolset for commissioning and diagnostics.

User-friendly function blocks simplify programming in Step 7 or the TIA Portal. Special functions are available in areas hostile to wireless communication encountered in production environments, such as reflections and dead zones resulting from metal or superimposed radio fields due to a high reader density.

In this manner, process stability is substantially increased by automatic adaptation of the transmit power and intelligent filtering of the reading results. The multi-stage filter concept ensures that, based on the wireless properties, the correct transponder within the RF field of the reader is always processed. The appropriate data storage medium is automatically selected on the basis of various indicators, such as the evaluation of the RSSI value (Received Signal Strength Indicator), the reading frequency, or the transmit power required.

Transponders that have already been processed can be stored in a "blacklist" in the reader and thus filtered out. Various mechanisms can be activated according to requirements.

One special feature of the RF685R is the integrated adaptive antenna. Whether linear (horizontal/vertical), circular or automatic polarization, the integrated antenna of the RF685R achieves the best reading rates, even in difficult radio reception environments.

The RF650R and RF680R/685R readers can be set and diagnosed by means of a Web browser. The RF680R/685R can also optionally be commissioned and diagnosed in the TIA Portal.

The RF650R reader is used mainly in logistics applications where a high degree of protection and SIMATIC integration are of lesser importance. With its four external antenna connections, as many as four individual reading stations or large gate applications can be implemented. The integrated processing logic allows comprehensive filter functions and control of the digital inputs/outputs in the reader itself. Configuration, commissioning and diagnostics are easily possible by means of a web browser, without the need for installing additional software.

External sensor technology (e.g. light barriers or motion detectors) and indicator lamps or acoustic sensors are integrated by means of the four digital inputs and outputs.