Unlock seamless protocol conversion with our rugged RS422 to RS485 Converter. Connect legacy systems with modern ease using this industrial-grade DB9 to 5-Pin Adapter. Update the conversion now!(Scroll down to see user guide)
RS422 to RS485 Converter DB9 to 5-Pin Terminal Block Adapter-Industrial-Grade Protocol Conversion for Seamless Connectivity
The RS422 to RS485 Converter DB9 to 5-Pin Terminal Block Adapter bridges legacy RS422/RS485 systems with modern industrial devices, enabling secure and flexible serial communication in harsh environments.
Key Features
- Multi-Mode Compatibility: Supports 4-wire RS422 (full-duplex), 4-wire RS485, and 2-wire RS485 (half-duplex) protocols.
- DB9 to Terminal Block Design: Converts DB9 male RS422/RS485 ports to a 5-pin screw terminal block (3.5mm pitch) for field wiring.
- Front-Locking Nut: Ensures vibration-resistant connections with DB9 female ports.
- Plug-and-Play: No external power or drivers required for basic operation.
Technical Specifications
| Specification | Details |
|---|---|
| Connectors | DB9 Female (with locking nut) + 5-Pin Screw Terminal Block |
| Protocol Support | RS422 (4-wire), RS485 (4-wire/2-wire) |
| Voltage Range | 5V–30V DC (via terminal block) |
| Baud Rate | Up to 1Mbps |
| Dimensions | 70mm × 50mm × 30mm |
| Certifications | CE, RoHS |
Applications
- Industrial Automation: PLCs, sensors, and control systems.
- Building Management: HVAC, security, and access control.
- POS & Retail: Barcode scanners and payment terminals.
- Transportation: Vehicle diagnostics and railway systems.
- Rugged Construction: EMI/RFI shielding and heavy-duty materials withstand extreme conditions.
- Ease of Installation: Tool-free wiring with color-coded terminals.
- Cost Efficiency: Eliminates complex adapter setups for legacy equipment.
Upgrade Your Serial Infrastructure
Transform RS422/RS485 signals into secure, configurable outputs with the PINOWELL DB9 to Terminal Block Converter. Ideal for professionals requiring reliable protocol conversion in industrial, commercial, and field environments.
Transform RS422/RS485 signals into secure, configurable outputs with the PINOWELL DB9 to Terminal Block Converter. Ideal for professionals requiring reliable protocol conversion in industrial, commercial, and field environments.
How to Use the RS422 to RS485 Converter DB9 to 5-Pin Terminal Block Adapter
Step 1: Determine the Protocol Mode
- 4-Wire RS422 (Full-Duplex): Use this mode for simultaneous bidirectional communication (e.g., between two devices with separate TX/RX lines).
- 4-Wire RS485: Use for full-duplex RS485 networks (rare; typically RS485 is half-duplex).
- 2-Wire RS485 (Half-Duplex): Most common for multi-drop networks (one sender at a time).
Step 2: Connect the Hardware
-
DB9 Female End:
- Connect the DB9 female port to the RS422/RS485 source device (e.g., PLC, modem) using a standard DB9 male-to-male cable.
- Secure the connection with the locking nut to prevent accidental dislodging.
-
5-Pin Screw Terminal Block:
- Terminals:
- 1 (A+) / 2 (B-): RS485 differential signals.
- 3 (TX+) / 4 (TX-): RS422 transmit signals (for 4-wire modes).
- 5 (GND): Ground.
- Wiring:
- Strip 6–8mm of insulation from wires.
- Tighten screws to secure wires (avoid over-tightening).
- Terminals:
Step 3: Configure the System
-
Software Setup:
- Use serial communication software (e.g., Tera Term, HyperTerminal, Modbus Slave) to configure baud rate, parity, and data bits to match your devices.
- Ensure the software supports RS422/RS485 protocols.
-
Mode Selection:
- For 2-wire RS485: Only connect A+ and B- terminals.
- For 4-wire RS422/RS485: Connect TX+/TX- and RX+/RX- (if applicable).
Step 4: Test the Connection
-
Power On:
- Apply power to the target device (via terminal block: 5V–30V DC).
- The converter requires no external power—it draws power from the connected devices.
-
Verify Communication:
- Send test data (e.g., ASCII strings) from the source device and check for reception on the target device.
- Monitor signal integrity with a multimeter or oscilloscope if needed.
Troubleshooting Tips
- No Signal:
- Check wiring polarity (A+ must connect to A+, B- to B-).
- Ensure baud rate and protocol settings match.
- Interference:
- Use shielded cables and ground terminals.
- Keep cables away from high-voltage lines.
- Voltage Issues:
- Verify the target device’s voltage compatibility (5V–30V DC).
Safety Notes
- Power Off: Disconnect power before modifying wiring.
- Avoid Shorts: Ensure wires do not touch each other or metal surfaces.
- Industrial Use: Rated for indoor/outdoor environments but avoid direct water exposure.
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