Unitronics UAC-CB-01RS4 Uni-COM CB RS485 communication module providing isolated serial networking for compatible UniStream PLC systems and industrial automation applications.
£42.00
The Unitronics UAC-CB-01RS4 is a dedicated RS485 communication expansion module designed for compatible UniStream PLC controllers. As part of the advanced Uni-COM CB communication module range, it adds a galvanically isolated RS485 serial communication interface, enabling reliable long-distance communication with industrial devices, remote I/O systems, variable speed drives, instrumentation and Modbus RTU networks.
Designed for machine builders and automation engineers, the UAC-CB-01RS4 integrates directly with compatible UniStream PLCs through the Uni-COM CB interface. This allows users to expand communication capabilities without requiring external gateways or protocol converters while maintaining dependable industrial communications.
Featuring one isolated RS485 port, support for communication distances up to 1,200 metres and multi-drop networking with up to 32 nodes, the UAC-CB-01RS4 provides a flexible and scalable solution for industrial automation applications.
RS485 remains one of the most widely used industrial communication standards due to its excellent noise immunity, long cable distances and support for multi-drop networks. The UAC-CB-01RS4 allows UniStream PLC systems to communicate with a wide range of industrial devices while maintaining stable and reliable data exchange.
Its support for long-distance communications and multiple network nodes makes it ideal for distributed automation systems, machine control applications and industrial process monitoring where dependable serial networking is essential.
| IP Rating | IP20 |
|---|---|
| Series | Uni-COM CB |
| Product type | RS485 communication module |
| Communication interface | RS485 |
| Number of ports | 1 |
| Connection type | 4-pin terminal block |
| Baud rate | 1,200 to 115,200 bps |
| Maximum nodes | 32 |
| Maximum cable length | 1,200 m (4,000 ft) |
| Cable type | Shielded twisted pair compliant with EIA RS485 |
| Isolation voltage | 500 VAC for 1 minute |
| Termination | DIP-switch selectable |
| Mounting type | DIN rail |
| Protection rating | IP20 / NEMA 1 |
| Operating temperature | -20°C to +55°C |
| Dimensions (H × W × D) | Approx. 63.9 × 120 × 36 mm |
| Compatibility | UniStream PLC controllers with Uni-COM CB interface |
The UAC-CB-01RS4 adds an RS485 communication interface to compatible UniStream PLC controllers for industrial networking and serial communications.
The module supports multi-drop networks with up to 32 connected devices.
The module supports baud rates from 1,200 bps to 115,200 bps.
RS485 communication can operate over distances of up to 1,200 metres when using suitable shielded twisted-pair cable.
The UAC-CB-01RS4 is designed for compatible UniStream PLC controllers equipped with the Uni-COM CB communication interface.
Unitronics Uni-COM CB communication modules provide dependable industrial networking solutions that enable UniStream PLC systems to integrate seamlessly with field devices, drives and distributed automation networks.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...