The USB-COMi-SI USB to Serial RS-422/485 port adapter is individually optically isolated with 2000 volt DC optical isolation. The optical isolation protects your PC or notebook from spikes and surges on the RS-422/485 network. This is done by converting the electrical pulse into an optical signal and then changing it back into an electrical pulse. Your computer is well protected, since the surges and spikes cannot cross the optical link.
The USB to serial signals on the RS-422/485 port are individually protected by a surge protector to withstand electrostatic discharge and power surges up to 25KV ESD. Surge suppression on all signals prevents damages caused by lightning and high voltage. The USB to serial port having 512 byte FIFO allows high-speed communication, even in heavily loaded systems. Unique features reduce the system load. The serial port also allows unusual speed settings like 500.000bps.
Features:
Hardware Specifications:
- Most cost economical RS-422/485 adapter with optical isolation
- 2000V DC optical isolation
- 25KV ESD surge protection
- RS-422, RS-485 mode settings by jumpers
- Installed as standard Windows COM port
- RS-422 data signals: TxD-, TxD+, RxD+, RxD-, GND, RTS-, RTS+, CTS+, CTS-
- RS-485 4-wire data signals: TxD-, TxD+, RxD+, RxD-
- RS-485 2-wire data signals: Data-, Data+
- Automatic transmit and receive control for 2-wire RS-485 half-duplex mode
- Built-in termination and biasing
- High speed serial port with the baud rate up to 921.6K bps
- Non-standard baud rates supported
- LEDs of TxD and RxD for easy port monitoring and diagnostic
- Powered by USB port, no external power adapter required
- Easy plug and play installation and RS-422/485 device connection
- COM port number assigned can be changed to any COM port number required
- Works with USB 1.1 & 2.0 host port
OS Support:
- Windows 7, 8, 8.1, 10, and Windows 11
- Linux and Mac OS 10.X
Package Contents:
- USB to Serial RS422/485 converter
- USB A to B cable
- Driver disc
Product Specifications
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UPC: 729440690878
Technical Specifications:
| 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 | DB9 male |
| Serial Line Protection | |
| ESD Protection | 25KV |
| Optical isolation | 2000V DC |
| 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-485-2 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. |
