FAQs - MODBUS TCP/IP Converters
Information on Modbus TCP to Modbus IP converters and how to use them.
The converter acts as a protocol bridge, encapsulating Modbus RTU frames into Modbus TCP packets for transmission over Ethernet networks and vice versa. It ensures that data integrity and command structure are maintained during the conversion process, allowing serial-based devices to communicate with TCP/IP-based systems without compatibility issues.
Most Modbus RTU to TCP converters support a wide range of baud rates (e.g., 9600 to 115200 bps) and standard parity settings (none, even, odd). These settings can usually be configured via a web interface, serial configuration tool, or DIP switches, enabling compatibility with various Modbus RTU devices.
Can a Modbus RTU to Modbus TCP Converter Handle Multiple Modbus RTU Devices on a Single Serial Line?
The answer is ‘Yes’, Many converters support multi-drop configurations, where multiple Modbus RTU devices are connected on a single RS-485 serial line. The converter uses the device IDs of the RTU devices to route requests and responses between the Ethernet-based Modbus TCP clients and the correct serial device. However, network performance may depend on the number of devices and polling frequency.