B&B Electronics CL255 Current Loop to RS-232 Converter

The B&B Electronics CL255 is a current loop to RS-232 level converter designed for reliable serial data communication between current loop and RS-232 devices. This compact interface module allows equipment using 20mA current loop signaling to communicate with modern RS-232 serial ports, bridging legacy industrial and teletype (TTY) equipment with contemporary computer systems.

Key Features:

• Converts 20mA current loop signals to RS-232 voltage levels
• Supports both active and passive current loop configurations
• Compact, DIN-rail or surface-mountable enclosure
• No external power supply required for passive loop operation
• Rugged construction suitable for industrial environments
• Wide compatibility with legacy serial and TTY devices

The CL255 is ideal for integrating older industrial controllers, terminals, and instrumentation with modern PC-based systems. As a trusted product from B&B Electronics Manufacturing Company (now Advantech B+B SmartWorx), it delivers the reliability and performance expected in demanding data communication applications.