RS485 USB Adapter w/RS422 to USB Support
Model：PMH-RS485/USB
EOL
Features
- One RS422/485 Port over USB Port
- Easy Serial Port Expansion over USB Port
- Supports 4-wire RS422 and 2-wire RS485 applications
- Supports RS485 Auto Transceiver Turn Around
- Supports USB Bus Power
- Hot Swappable and Plug-and-Play Features
- Compact Size for Critical Applications
Discontinued date
- 2019.06.19
Alternative models
- MOXA NPORT5150
Specifications
| Model | PMH-RS485/USB |
| OS | Windows95/98/2000/XP/Vista/7 |
| Standards | Conform to the standards of USB V1.1, EIA RS-485, and RS-422. |
| USB signal | VCC、DATA+、DATA-、GND、FG |
| RS-485 signal | T+、T-、GND |
| RS-422 signal | T+、T-、R+、R-、GND |
| Communication type | Asynchronous communication, point to point or point to multipoint, 2 lines of halt-duplex, and 4 lines of full-duplex. |
| Communication control | Uses auto-control technology to transfer data and automatically determines and controls the direction of data transfer. |
| Communication distance | RS-422/RS-485 5000 meter (9600 bps), USB less than 5 meter |
| Type of communication line | Double twist line or cover line. |
| Communication speed | 921600 bps 300 M 38400 bps 2.4 KM 9600 bps 5 KM |
| Baud Rate | 300~921600 bps, automatic detect the serial port speed. |
| Load ability | In point to multi-points each converter can connects 32 units of RS-422 or RS-485 interface equipment. |
| Surge Protection | 15 KV ESD for all signals |
| Operating temperature | -25℃ - 70℃ |
| Operating humidity | 5% - 95% |
| Dimensions | 55mm × 36mm × 18mm |
| Weight | 80g. |
| Power Supply | USB 30 mA @DC5V |
Downloads
| Classification | Description | Date | File Size | Downloads |
| Catalogue | Catalogue-PMH-RS485 USB | 2023-07-12 | 446KB | |
| Manual | PMH-RS485 USB User Manual | 2016-12-05 | 543KB |
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