High-res Photo
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 |
Accessories

Filter by camera:
-
BTE08W
Launched
-
BTR09W
Launched
-
BTR10W
Launched
-
BCD01S
Launched
-
BCR02W
Launched
-
BCR03W
Launched
-
BCR04W
Launched
-
BCR05W
Launched
-
BCR05W-V1
Launched
-
BCR06W
Launched
-
BCR06W-V1
Launched
-
BTD01W
Launched
-
BTD02W
Launched
-
BTD04W
Launched
-
BTD04W-V1
Launched
-
BTE02S
Launched
-
BTE07K
Launched
-
BTR03S
Launched
-
BTR06S
Launched
-
BTR07W
Launched
-
BTR08W
Launched
-
BTR08W-V1
Launched
-
BTS02S
Launched
-
BTS03W
Launched
-
BTS06W
Launched
-
PIH-510CPM
Launched
-
PIH-5208HBW
Launched
-
PIH-5208LBW
Launched
-
PIH-520HBW
Launched
-
PIH-520LBW
Launched
-
PIH-520LW
Launched
-
PIH-76WM
Launched
-
PIH-76WMW
Launched
-
PIH-CPM
Launched
-
PIH-Z6W
Launched
Copyright © Merit LILIN Ent. Co., Ltd. All Rights Reserved.