Why Choose the IMO XEL-BSSA Smart I/O Modbus TCP Ethernet Header?
The IMO XEL-BSSA is a compact Smart I/O Ethernet header designed to create modular remote I/O systems using compatible IMO XGB expansion modules. Communicating over Modbus TCP, it allows digital and analogue I/O to be positioned remotely from the main controller and connected through standard industrial Ethernet infrastructure.
The XEL-BSSA supports 10/100 Mbps Ethernet and features two RJ45 Ethernet ports, allowing either star or line/daisy-chain network topologies. Each base can accommodate up to 8 digital I/O modules, providing a maximum of 256 digital I/O points, while compatible analogue, temperature and mixed-I/O modules provide considerable flexibility when configuring a remote I/O station.
Operating from a 24 V DC supply, the XEL-BSSA has a compact DIN-rail-mounted design suited to industrial control panels and distributed automation installations. Its compatibility with IMO XGB expansion modules allows engineers to select digital inputs, transistor outputs, relay outputs, analogue I/O, RTD and thermocouple modules according to the requirements of each application.
Key Advantages
- Modbus TCP remote I/O simplifies integration with compatible Ethernet controllers.
- Dual 10/100 Mbps RJ45 Ethernet ports support flexible network installation.
- Supports up to 8 I/O modules per base for modular system configuration.
- Maximum capacity of up to 256 digital I/O points on a single base.
- Compatible with a broad range of IMO XGB digital, analogue and temperature I/O modules.
- Compact DIN rail mounting helps minimise control-panel space requirements.
Key Features
- IMO Smart I/O Ethernet header.
- Modbus TCP communication protocol.
- 10/100 Mbps Ethernet data transmission.
- 2 × RJ45 Ethernet ports.
- Supports line/daisy-chain and star network topologies.
- IEEE 802.3 Ethernet standard.
- Full-duplex and half-duplex communication.
- Maximum Ethernet node distance of 100 m.
- Maximum protocol size of 1,500 bytes.
- Supports up to 8 digital I/O modules.
- Supports up to 8 analogue I/O modules.
- Maximum of 256 digital I/O points.
- 24 V DC power supply.
- Software-configurable IP address.
- Compact DIN rail mounting.
- Status LEDs provide indication of power, CPU, I/O and Ethernet communication activity.
Modbus TCP Remote I/O for Distributed Automation
The IMO XEL-BSSA allows I/O modules to be installed closer to sensors, switches and actuators instead of routing every field signal back to the main PLC enclosure. The remote station communicates with the controlling system using Modbus TCP over Ethernet, helping reduce field wiring and providing a scalable approach to distributed machine and process automation.
Its modular architecture allows compatible XGB expansion modules to be selected according to the application, including 24 V DC digital inputs, relay and transistor outputs, analogue voltage and current signals, PT100 RTD inputs and thermocouple inputs. Dual Ethernet ports also simplify the creation of line or daisy-chain installations where multiple networked devices need to be connected without a separate Ethernet switch at every station.
Typical Applications
- Modbus TCP remote I/O systems.
- Distributed industrial machinery I/O.
- PLC and HMI-based automation systems.
- Packaging and processing machinery.
- Conveyor and material handling systems.
- Remote digital and analogue signal acquisition.
- Temperature monitoring using compatible RTD and thermocouple modules.
- Industrial control panels requiring expandable Ethernet I/O.
