D-TECH RS232/485/422 Single-Mode Fiber Optic Transceiver
DT-9077-FC port
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Rs 31,496.87
List: Rs 31,731.93
DT-9077 Industrial RS232 / RS485 / RS422 Fiber Modem
3-in-1 Industrial Serial-to-Fiber Converter • Single Mode up to 20KM
Product Overview
The DT-9077 is an industrial-grade fiber modem designed to extend RS232, RS485 and RS422 serial communication over optical fiber. It provides reliable long-distance data transmission for industrial automation, SCADA, RTU, monitoring and remote communication systems.
The modem supports RS485 2-wire half-duplex and RS422 4-wire full-duplex communication. Transmission distance reaches up to 20KM over single-mode fiber and 5KM over multimode fiber.
|
20KM Single Mode |
460 Kbps RS485 / RS422 |
3-in-1 RS232 / RS485 / RS422 |
Key Features
| ✓ RS232 / RS485 / RS422 in one device | ✓ Baud rate adaptive |
| ✓ Point-to-point fiber communication | ✓ 1310 nm operating wavelength |
| ✓ Single Mode: up to 20KM | ✓ Multimode: up to 5KM |
| ✓ RS485 2-wire half-duplex | ✓ RS422 4-wire full-duplex |
| ✓ RS232 up to 115.2 Kbps | ✓ RS485 / RS422 up to 460 Kbps |
| ✓ ±15 kV ESD protection for RS232 | ✓ TVS protection for RS485 / RS422 |
| ✓ LED status indicators | ✓ Wide DC power input |
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | DT-9077 |
| Product Type | Industrial Serial-to-Fiber Modem |
| Serial Interfaces | RS232 / RS485 / RS422 |
| RS485 Mode | 2-Wire Half-Duplex |
| RS422 Mode | 4-Wire Full-Duplex |
| RS232 Data Rate | Up to 115.2 Kbps |
| RS485 / RS422 Data Rate | Up to 460 Kbps |
| Operating Wavelength | 1310 nm |
| Single-Mode Distance | Up to 20KM |
| Multimode Distance | Up to 5KM |
| Fiber Interface | ST Standard; SC / FC Optional |
| Fiber Connection | Dual Fiber; Single Fiber Optional |
| Electrical Connection | Screw Terminal |
| Input Voltage | DC 9–35 V |
| RS232 Protection | ±15 kV ESD Protection |
| RS485 / RS422 Protection | TVS Diode Protection |
| Relative Humidity | 5% – 95% |
Screw Terminal Pin Assignment
| Pin | Signal | RS422 Full-Duplex | RS485 Half-Duplex |
|---|---|---|---|
| 1 | T/R+ | Send (A+) | A+ |
| 2 | T/R− | Send (B−) | B− |
| 3 | RXD+ | Receive (A+) | Not Used |
| 4 | RXD− | Receive (B−) | Not Used |
| 5 | TXD | RS232 Send | |
| 6 | RXD | RS232 Receive | |
| 7 | GND | RS232 Ground | |
| 8 | VCC | DC 9–35 V | |
| 9 | GND | Power Ground | |
| 10 | ETH | ETH Protected Area | |
Optical Fiber Connection
DT-9077 Unit A – TX
→
Optical Fiber
→
RX – DT-9077 Unit B
DT-9077 Unit A – RX
←
Optical Fiber
←
TX – DT-9077 Unit B
Important: For the standard dual-fiber configuration, two DT-9077 units
are required. Connect TX → RX and RX ← TX between the two units.
Typical Applications
| SCADA Systems – Long-distance communication between controllers and remote equipment |
| RTU Communication – Fiber connection for remote terminal units |
| Industrial Automation – Factory, plant and industrial equipment communication |
| Serial Fiber Extension – Extend RS232 / RS485 / RS422 communication over fiber |
| Remote Monitoring – Data acquisition and monitoring over long distances |
DT-9077 Industrial Fiber Communication
A practical solution for converting and extending RS232, RS485 and RS422 serial communication over optical fiber, especially where long distance and electrical isolation are required.
A practical solution for converting and extending RS232, RS485 and RS422 serial communication over optical fiber, especially where long distance and electrical isolation are required.
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