The Modbus RTU (Remote Terminal Unit) protocol is used in serial communication and is the most common implementation of this standard. Uses a compact, binary data representation for protocol communication. The RTU format follows the commands/data with a cyclic redundancy checksum CRC (Cyclic Redundancy Check) as an error checking mechanism to ensure data reliability.
Netronix wall-mounted RFID readers and modules equipped with an RS485 and / or RS232 serial interface have implemented Modbus RTU protocol support, supporting installers in the configuration of devices using the generally accepted communication standard in the industry.