ETHModbusIO8RA is an Ethernet based Modbus I/O module that provides robust digital and analog I/O capabilities in a compact form factor. It supports Modbus TCP and Modbus RTU over RS485, enabling easy integration with PLCs, HMIs, and SCADA systems. The device combines digital relay control, digital I/O, and analog sensing/actuation in a single module for streamlined automation and remote I/O applications. Key features and attributes Modbus support: Modbus TCP and Modbus RTU over RS485 for versatile communication with industrial controllers and supervisory systems. I/O channels: 8 channel relay outputs (8R) for switching loads, plus 8 digital inputs/outputs (8I8O) for fast digital signaling. Analog I/O: 6 analog inputs (6AI) and 2 analog outputs (2AO) for sensor data acquisition and analog control. Ethernet module: Enables remote access, monitoring, and control over a standard Ethernet network. RS485 interface: Built for reliable serial communication with Modbus RTU devices and multipoint networks. Model designation: ETHModbusIO8RA, aligning with the product line and feature set described. Form factor: Compact Ethernet based module suitable for panel mounting and integration into existing control cabinets. Compatibility: Designed to work with Modbus capable controllers, PLCs, HMIs, and SCADA systems. What it enables Flexible automation topology: Combine digital, relay, and analog I/O in one device to simplify wiring and reduce cabinet space. Remote control and monitoring: Access I/O status, read analog sensor values, and control relays over Ethernet or RS485 from a central system. Scalable integration: Adds multichannel I/O to existing Modbus networks without requiring extensive rewiring. Applications and use cases Industrial automation and machine control: Use 8R relay outputs to start/stop motors, pumps, or actuators while reading process signals via 6AI inputs for monitoring temperature, pressure, or level sensors and using 2AO outputs to control actuators or valves. Building automation: Manage lighting, HVAC, and environmental systems by reading digital sensors with 8I8O and adjusting setpoints or damper positions through the analog outputs, all connected to a Modbus capable building management system. Remote I/O for PLCs/SCADA: Deploy ETHModbusIO8RA as a field I/O gateway on a Modbus network, linking multiple PLCs or controllers through Ethernet and RS485 to consolidate control signals and sensor readings in a single interface. Notes on use and integration Protocol support ensures compatibility with standard Modbus TCP/RTU setups, enabling straightforward integration with existing control architectures. The device combines digital relay capability, digital I/O, and analog input/output in one module to reduce wiring complexity and streamline installation. Suitable for applications requiring reliable multichannel I/O in an Ethernetconnected automation environment.