The Omron CompoBus/S Master Unit, model C200HW-SRM-V1, is a dedicated communication module designed for high-speed remote I/O control within the CompoBus/S network architecture. This unit enables efficient ON/OFF binary signal communication, significantly reducing wiring complexity and installation labor through its bus-based topology.

Key Communication Functions:

The master unit facilitates CompoBus/S remote I/O communication, supporting up to 16 slave units (expandable via T-branch connectors). It manages a maximum of 256 I/O points per master (128 inputs and 128 outputs), ensuring robust data exchange for distributed control systems.

High-Speed Performance:

The system achieves a large communication scan cycle of just 1 ms, during which it can communicate with up to 32 slave units and exchange 256 data points. When operating with 16 slave units, the scan cycle is reduced to 0.5 ms, exchanging 128 data points. This high-speed ON/OFF bus capability ensures real-time responsiveness for demanding automation tasks.

Simplified Wiring and Connectivity:

The unit uses dedicated cables—either flat ribbon cable or VCTF cable—to minimize wiring effort. It supports T-branch wiring and multi-drop connections, allowing flexible system expansion. The T-branch connector enables easy addition of slave units without extensive reconfiguration, particularly when used with the dedicated flat cable.

Long-Distance Communication:

The master unit supports a maximum trunk line length of 100 meters, maintaining reliable high-speed ON/OFF communication over long distances. This makes it suitable for large-scale factory automation setups where distributed I/O points are required.

System Expansion and Compatibility:

As a master unit, it is compatible with a wide range of CompoBus/S slave units, and its modular design allows for seamless integration into Omron C200H-series PLC systems. The ability to use T-branch connectors and flat cables simplifies future system upgrades or reconfigurations.