RS-232 to RS-422/485 Converter - Industrial 2-Port Terminal Block Solution
The B+B SmartWorx BB-485SD9TB is an industrial-grade RS-232 to RS-422/485 converter engineered for demanding automation and control environments. This robust 2-port converter delivers reliable serial interface conversion with terminal block connections, enabling seamless communication between legacy RS-232 devices and modern RS-422/485 industrial networks. Perfect for manufacturing facilities, SCADA systems, and distributed automation applications requiring galvanic isolation and extended cable runs.
Key Features
- Dual-port RS-232 to RS-422/485 conversion with independent channel operation
- Industrial-grade terminal block connectors for secure, field-installable wiring
- Galvanic isolation protection for noise immunity in harsh electrical environments
- Powered operation with robust power supply integration
- Extended cable run capability up to 4,000 feet on RS-485 lines
- DIN rail mountable design for panel integration
- Wide operating temperature range for industrial deployment
- LED status indicators for real-time port monitoring
Technical Specifications
| Specification |
Details |
| Manufacturer |
B+B SmartWorx |
| Part Number |
BB-485SD9TB |
| Converter Type |
RS-232 to RS-422/485 |
| Number of Ports |
2 Independent Channels |
| Connector Type |
Terminal Block (TB) |
| Interface Standards |
RS-232, RS-422, RS-485 |
| Maximum Cable Distance |
4,000 feet (RS-485) |
| Isolation |
Galvanic Isolation |
| Mounting |
DIN Rail Compatible |
| Operating Temperature |
Industrial Grade Range |
| Application Class |
Industrial Automation, SCADA, Control Systems |
Frequently Asked Questions
What is an RS-232 to RS-422/485 converter used for?
An RS-232 to RS-422/485 converter bridges legacy serial devices with modern industrial networks. It converts single-ended RS-232 signals to differential RS-422/485 signals, enabling longer cable runs (up to 4,000 feet), better noise immunity, and multi-drop capability in industrial automation, SCADA, and manufacturing control systems.
Can the BB-485SD9TB handle multiple devices on one network?
Yes, the dual-port design supports independent channel operation, allowing you to manage multiple serial connections simultaneously. The RS-485 interface supports multi-drop configurations, enabling several devices to share the same communication line with proper termination and addressing protocols.
Is this industrial converter suitable for harsh environments?
Absolutely. The BB-485SD9TB features galvanic isolation for electrical noise protection, industrial-grade terminal block connectors, wide operating temperature range, and robust power supply integration—making it ideal for manufacturing floors, outdoor installations, and electrically noisy environments.
How do I install the RS-422/485 converter in my system?
The converter features DIN rail mounting for easy panel integration and terminal block connectors for field installation. Simply connect your RS-232 source to one port and your RS-422/485 network to the other, apply power, and monitor the LED status indicators for proper operation.
