RS232 to RS422 / RS485 Converter 230V : LD-15U

The Milestone LD-15U is a dependable RS232 to RS422/RS485 serial converter that enables legacy RS232 equipment to communicate with modern RS422 and RS485 industrial systems. Powered by a standard 230V AC supply, it delivers stable long-distance serial communication and converts point-to-point RS232 links into multi-drop RS422/RS485 networks, making it an ideal building block for industrial control, security and automation installations.

Key Feature

• Universal RS232 to RS485/RS422 Conversion: Converts standard RS232 signals to differential RS485 or RS422 control signals, enabling high-speed long-distance serial communication.

• Flexible Wire & Duplex Operation: Features a rear selection switch to easily toggle between 2-wire (half-duplex) RS485 and 4-wire (full-duplex) RS422 mode configurations.

• Long-Distance Transmission Range: Drives serial data up to 1.2 km (1,200 meters) over standard shielded twisted-pair cabling under high-noise industrial conditions.

• Opto-Isolation & Surge Protection: Built-in optoelectronic isolation and individual signal spike suppressors safeguard connected systems against high-voltage transients up to 2500V Peak, noise, and ground loops.

• Multi-Drop & Flow Control Support: Supports up to 32 multidrop devices in a networked environment, featuring automatic flow control or manual DSR handshake line management.

• Industrial Build & LED Diagnostics: Housed in a durable enclosure with clear LED status indicators for Power, TX, RX, and DSR for quick line diagnostics. 

Applications
• Industrial automation and machine control systems
• Access control and security integration panels
• Building management and HVAC control networks
• Data acquisition and SCADA installations
• AV and CCTV system integration

Summary
The Milestone LD-15U RS232 to RS422/RS485 converter is a practical, cost-effective solution for extending and modernising serial communication links. With its 230V AC operation and dependable signal conversion, it ensures stable data transfer in demanding B2B and industrial environments.