These Modbus couplers enable Modbus RTU or Modbus ASCII communications within a distributed I/O architecture. The fieldbus couplers serve as a gateway between the company’s I/O-System and higher-level devices, including PLCs and PCs. The devices carry such worldwide certifications as hazardous-location ratings and marine approvals. Data transmission speed can be configured between 1.2 and 115.2 Kbaud. The couplers also support more than 247 node addresses, providing connectivity to multiple devices on the network. Available in two versions (RS-485 or RS-232), the couplers support more than 500 Wago I/O modules.