USB TO RS422/RS485 ADAPTERS (FULL SPEED)
Description
Our USB to RS422/RS485 adapters are an easy way to connect RS422 or RS485 devices to a USB port on your computer.
Each port can be set as RS422 or RS485 allowing devices using either of these protocols to be connected. Each port has options such as termination and biasing and indication LEDs for Tx and Rx for easy diagnostics.
With a variety of port numbers and enclosure styles and easy to install drivers for a range of operating systems, these adapters are ideal for adding one or more RS422/RS485 ports to your computer.
- Based on the renowned FTDI USB-Serial chipsets and drivers
- Microsoft Windows® WHQL-certified, macOS and Linux drivers
- Each RS422/RS485 port can appear as a Virtual Com Port allowing easy use with existing application programs
- Multi-port units create a separate COM port for each port with separate settings (such as baud rate and flow control) per port
- Ports can also be accessed using the FTDI D2xx DLL functions
- Signals (note that modes and signals may vary between models)
- RS422: TxD+, TxD-, RxD+, RxD-, GND, RTS+, RTS-, CTS+, CTS-
- RS485 4-wire: TxD+, TxD-, RxD+, RxD-, GND
- RS485 2-wire: Data+, Data-, GND
- RS422/RS485 signals via DB-9 and/or Terminal Block (depending on model)
- Automatic Hardware (RTS / CTS) flow control on RS422 models (where signals are available on connector)
- Software (X-on/X-off) flow control
- Transmit and Receive LED indicators help to confirm operation and assist in troubleshooting
- Available in 1, 2, 4, 8 and 16-port versions
- USB powered or from external/Internal PSU (depending on model)
- Variety of robust plastic and metal enclosures
Feel free to browse through the corresponding datasheet for more information.
Document
| Part Number | Document Type | Version | File |
| ES-U-2001B | ES-U-2001B Manual | 2.3 | Download |
| ES-U-2001-S | Installation Guide | 1.2 | Download |
| ES-U-2001-STB | Installation Guide | 1.2 | Download |
| ES-U-2001 | ES-U-2001 Product Change Notification | 1.2 | Download |
| ES-U-2008-M ES-U-2016-RM ES-U-2002-M |
Manual | 2.3 | Download |
| ES-U-2001-S | EOL Notification | Download | |
| All Products | Drivers Installation Guide | 1.1 |
Download |
ES-U-2001-S
USB-COMi+2 Products Manual
|
USB Bus |
||
| Compliance | USB 1.0/1.1 compliant, USB 2.0 compatible | |
| Speed | 12 Mbps, full-speed USB | |
| FIFO |
128 byte transmit FIFO 384 receive FIFO |
|
|
Serial Interface |
||
| Port Type |
RS-422/RS-485 selectable | |
| Number of Ports |
1 |
|
| Connectors |
DB9 male | |
|
Serial Line Protection |
||
| ESD Protection | 10KV | |
|
Serial Port Speed |
||
| Baudrate | 300 bps to 921.6k bps | |
|
Serial Communication Parameters |
||
| Data Bits |
5, 6, 7, 8 | |
| Stop Bits |
1, 1.5, 2 | |
| Parity |
None, Even, Odd, Space, Mark | |
| Flow Control | RTS/CTS, XON/XOFF | |
| Serial Signals | ||
| RS-422 | TxD-(A), TxD+(B), RxD+(B), RxD-(A), GND, RTS-(A), RTS+(B), CTS+(B), CTS-(A) | |
| RS-485-4 wire | TxD-(A), TxD+(B), RxD+(B), RxD-(A), GND | |
| RS-485-2 wire |
Data-(A), Data+(B), GND | |
|
Driver Support |
||
| OS | Windows 7, Vista, 2003, XP (WHQL certified) and 2000 Linux Kernel 2.4 and up built-in support |
|
| Power Supply | ||
| Input |
Bus-powered No external power adapter required |
|
|
Mechanical |
||
| Chassis | Plastic, ABS | |
|
Environmental |
||
| Operating Temperature | 0 to 55 °C (32 to 131 °F) | |
| Operating Humidity |
5 to 95% RH | |
| Storage Temperature |
-20 to 75 °C (-4 to 167 °F) | |
| Safety Approvals |
EN55022 Class B, EN55024, EN61000-3-2, EN61000-3 IEC 61000-4-2, IEC 61000-4-3, IEC 61000-4-4, IEC 61000-4-5, IEC 61000-4-6, IEC 61000-4-8, IEC 61000-4-11. CISPR PUB. 22 and FCC Part 15 Class B. |
|
ES-U-2001-STB
USB-COMi-TB Products Manual Download
| USB Bus | |
| Compliance | USB 1.0/1.1 compliant, USB 2.0 Compatible |
| Speed | 12 Mbps, full-speed USB |
| FIFO | 128 byte transmit FIFO 384 receive FIFO |
| Serial Interface | |
| Port Type | RS-422/RS-485 |
| Number of Ports | 1 |
| Connectors | 5-pin terminal block |
| Serial Line Protection | |
| ESD Protection | 10KV |
| Serial Port Speed | |
| Baudrate | 300 bp to 921.6k bps |
| Serial Communication Parameters | |
| Data Bits | 5,6,7,8 |
| Stop Bits | 1,1.5, 2 |
| Parity | None, Even, Odd, Space, Mark |
| Flow Control | RTS/CTS, XON/XOFF |
| Serial Signals | |
| RS-422 | TxD-(A), TxD+(B), RxD+(B), RxD-(A), GND |
| RS-485-4 wire | TxD-(A), TxD+(B), RxD+(B), RxD-(A), GND |
| RS-485-2 wire | Data-(A), Data+(B), GND |
| Driver Support | |
| OS |
Windows 7, Vista, 2003, XP (WHQL certified) and 2000 Linux Kernel 2.4 and up built-in support |
| Power Supply | |
| Input |
Bus-powered No external power adapter required |
| Mechanical | |
| Chassis | Plastic, ABS |
| Environmental | |
| Operating Temperature | 0 to 55 °C (32 to 131 °F) |
| Operating Humidity | 5 to 95% RH |
| Storage Temperature | -20 to 75 °C (-4 to 167 °F) |
| Safety Approvals |
EN55022 Class B, EN55024, EN61000-3-2, EN61000-3 IEC 61000-4-2, IEC 61000-4-3, IEC 61000-4-4, IEC 61000-4-5, IEC 61000-4-6, IEC 61000-4-8, IEC 61000-4-11. CISPR PUB. 22 and FCC Part 15 Class B. |
Downloads
| Driver |
Download Virtual COM Port (VCP) Drivers for Windows, Mac OS and Linux |
Order Information
| SKU | Ports | Housing | Connector |
| ES-U-2001B | 1 | ABS | USB-B |
|
ES-U-2008-M Din Rail Bracket (DR-201) the rank mount clip is available for sales. |
8 | Metal | USB-B |
| ES-U-2016-RM | 16 | Metal | USB-B |
| ES-U-2001-S (EOL) | 1 | ABS | USB-A |
| ES-U-2001-STB | 1 | ABS | USB-A w/ Terminal Block |
|
ES-U-2002-M Din Rail Bracket (DR-201) the rank mount clip is available for sales. |
2 | Metal | USB-B |