B&B Electronics BB-2659 RS-232 to RS-422/RS-485 Serial Converter

The B&B Electronics BB-2659 is a compact serial communications converter designed to bridge RS-232 interfaces with RS-422 or RS-485 networks. B&B Electronics (now part of Advantech) is a well-established manufacturer of industrial serial communication devices, and the BB-2659 fits within their broad line of signal-level converters used in industrial automation, process control, and data acquisition applications.

Key Features:

• Converts RS-232 signals to RS-422 or RS-485 for extended-distance serial communication
• Supports multi-drop RS-485 networks, enabling connection of multiple devices on a single bus
• Industrial-grade construction suitable for demanding environments
• Compact form factor for easy integration into control panels or enclosures
• Passive or powered operation depending on configuration
• Compatible with standard serial communication protocols and baud rates

The BB-2659 is ideal for extending legacy RS-232 serial connections over longer cable runs or integrating RS-232 host equipment into RS-485 multi-drop networks. It is commonly used in manufacturing, building automation, and process control environments where reliable, noise-immune serial communication is required.