RS232 DB9 to RS485/RS422 Converter with 6-Pin Terminal Block Adapter – Industrial Serial Protocol Bridge
Simplify serial communication conversions with this RS232 DB9 male to RS485/RS422 terminal block adapter, designed for industrial IoT, automation, and hobbyist projects. Convert RS232 signals to differential RS485/RS422 protocols using its 6-pin screw terminal block, supporting 300V voltage and 1Mbps data transfer. Features a panel-mountable design with gold-plated contacts and TUV-certified terminals for reliable, vibration-resistant connections.
Technical Specifications
| Category | Details |
|---|---|
| Interface | DB9 female (RS232) to 6-pin terminal block (RS485/RS422) |
| Protocol | RS232 to RS485/RS422 bidirectional conversion |
| Voltage/Current | 300V AC/DC, 5A max (continuous) |
| Wire Compatibility | 22–28AWG solid/stranded wires (POTS, Ethernet) |
| Termination | Screw-down clamps (M3 screws) with 3.81mm pitch (TUV-certified) |
| Shielding | Aluminum foil + braided copper (85% coverage) |
| Material | UL94 V-0 flame-retardant PVC (black housing) |
| Dimensions | 32mm (L) × 22.5mm (W) × 11mm (H) |
| Mounting | Panel-mountable (up to 1.6mm thickness) |
Core Advantages
-
Plug-and-Play Conversion
- Directly converts RS232 (DB9) to RS485/RS422 for multi-drop networks.
- No software configuration required—hardwired for automatic protocol switching.
-
Industrial-Grade Performance
- 3.81mm Pitch Terminals: TUV-certified for secure wire termination.
- Gold-Plated Contacts: 50μ” thickness for 10,000+ mating cycles.
-
Safety & Reliability
- Reverse Polarity Protection: Prevents damage from incorrect wiring.
- EMI Immunity: Shielded design for noise-free data transmission.
-
Flexible Installation
- Panel-Mountable: Fits into standard 1.6mm-thick enclosures.
- Isolating Pad: Reduces electrical noise and prevents slipping.
Design Features
1. Terminal Block Layout
- Pins:
- 1: RS485+ (A)
- 2: RS485- (B)
- 3: GND
- 4: RS422 TX+
- 5: RS422 TX-
- 6: RS422 RX+
- 7: RS422 RX- (optional)
2. DB9 Pin Assignment
- DB9 Male (RS232):
- 2: TXD
- 3: RXD
- 5: GND
3. Safety Mechanisms
- Overcurrent Protection: Automatic shutdown at 6A (5A continuous).
- Surge Protection: 1.5kV ESD rating for transient voltage spikes.
Applications
-
Industrial Automation
- PLCs, sensors, and motor drives in factory floors.
- Long-distance communication between devices (RS485 supports 1.2km).
-
Smart Infrastructure
- IoT gateways, smart meters, and building automation systems.
- Security cameras and access control panels.
-
Hobby & DIY Projects
- Converting legacy RS232 devices to modern RS485 networks.
- Raspberry Pi/Arduino setups requiring serial communication.
Installation Guide
Step 1: Prepare Wires
- Strip 6–8mm of insulation from wire ends.
Step 2: Connect to Terminal Block
- Loosen the screws on the terminal block.
- Insert wires into labeled slots (e.g., Pin 1 = RS485+).
- Tighten the screws to secure the connection (0.5–0.8Nm torque).
Step 3: Attach to RS232 Device
- Plug the DB9 male end into a PC, PLC, or RS232-enabled device.
Step 4: Test
- Use a loopback test or serial monitor software to verify communication.
Troubleshooting Tips
| Issue | Solution |
|---|---|
| No Data Transfer | Check wire polarity (RS485+/- must match network). |
| Data Errors | Ensure termination resistors (120Ω) are installed on the RS485 bus. |
| Overheating | Reduce load to ≤5A; ensure proper ventilation. |
Why Choose This Adapter?
- Certifications: CE, RoHS, TUV (terminal block), and UL listed (UL File No. E365489).
- Customization: Available with isolated versions or 5-pin configurations.
- Lifecycle: 10,000+ wire insertions and 50,000+ DB9 mating cycles.
Technical Support: Free wiring diagrams and protocol conversion guides.
Bridge Legacy and Modern Serial Networks Today 🛠️🔌
Optimized for: Industrial IoT, automation, security systems, DIY electronics.
Keywords: RS232 to RS485 converter, DB9 to terminal block, 3.81mm pitch, TUV-certified, panel-mount adapter.
Keywords: RS232 to RS485 converter, DB9 to terminal block, 3.81mm pitch, TUV-certified, panel-mount adapter.