The USB-8COMi-RM 8 Port USB to RS-232/422/485 Serial Adapter is designed to make serial port expansion for industrial applications convienent and fast. Whether it’s connecting to a computer’s host USB port or USB hub, the 8 Port USB Serial Adapter instantly Adds eight RS-232, or RS-422, or RS-485 serial communication ports to your system using Plug-and-Play technology.
By connecting the 8 Port USB Serial Adapter to your computer, the adapter is automatically detected and installed with no IRQ & COM port conflicts or configuration since the ports do not require any additional IRQ, DMA, memory. The adapter is self-powered, and has built-in switching power supply of 100V/240V (input) inside the chassis.
The USB-8COMi-RM serial adapter is designed with 8 external 4-pin dip switches to independently set RS-232, RS-422or RS-485 mode conveniently, without the need to open the metal chassis. The adapter is with DIN rail bracket for industrial application environments and can be also mounted to a 19 rack, the rack mount kits are included with the adapter.
Termination and biasing option are available for data transmission lines. The USB-to-Octal RS-232/422/485 Adapter provides instant connectivity to RS-232, RS-422, RS-485 communication devices for POS, factory automation equipment, multi-drop data collection devices, bar code readers, time clocks, scales, data entry terminals, PC to PC long distance communications, ATMs and serial communication in harsh environments.
The USB-8COMi-RM USB to Industrial I/O provides industrial solution requiring single node or multi-drop communications over short and long distance.
Additional Features:
- Adds eight RS-232, RS-422 or RS-485 serial ports by connecting to a USB port
- No need to open chassis to set operation modes-eight external DIP switches for easy RS-232, RS-422, RS-485 mode settings
- Installed as standard Windows COM port
- SECC metal chassis with both DIN rail brackets and rack-mounting kits for flexible mounting
- Full RS-232 modem control signals and hardware/software flow control
- RS-232 data signals: TxD, RxD, RTS, CTS, DSR, DTR, DCD, RI, GND
- 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 Power, TxD and RxD for easy port monitoring and diagnostics
- Serial port protected with surge protection of 10KV
- Built-in switching power supply of 100V~240V
- Easy plug and play installation and RS-232/RS-422/RS-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
- Item Dimensions: 10.11(L) x 5.80(W) x 1.73in(H)
OS Support:
- Windows Windows 7, 8, 10, & Windows 11
- Linux and Mac OS 10.X
Package Contents
- 1x 8 Port USB to RS-232/422/485 Octal Serial Adapter
- 1x Mounting Brackets
- 1x DiN Rail Brackets
- 1x 3ft. USB-A to B Device Cable
- 1x Three Prong Power Cord
- 1x Driver Disk
*Surface Mounting screws not included.
Product Specifications
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UPC: 729440690984
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-232/RS-422/RS-485 selectable |
| Number of Ports | 8 |
| 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-232 | TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND, RI |
| 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 | Self-powered Built-in AC to DC switching power supply with wide Range of AC input from 100VAC to 240VAC |
| Mechanical | |
| Chassis | SECC metal chassis with DIN rail bracket Rack-mounting brackets included |
| 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) |
| RS-232 & RS-422 & RS-485 DB9 Male Connector Pin-outs | ||||||||||||||||||||||||||||||||||||||||
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| RS-232 DB9 Male | ||||||||||||||||||||||||||||||||||||||||
| RS-232 Signal Pin-outs of DB-9 Male | ||||||||||||||||||||||||||||||||||||||||
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| RS-422 DB9 Male | ||||||||||||||||||||||||||||||||||||||||
| RS-422 Signal Pin-outs of DB-9 Male | ||||||||||||||||||||||||||||||||||||||||
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| RS-485 DB9 Male | ||||||||||||||||||||||||||||||||||||||||
| RS-485 4-Wire (Full duplex) Signal Pin-outs of DB-9 Male | ||||||||||||||||||||||||||||||||||||||||
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| RS-485 2-Wire (Half duplex) Signal Pin-outs of DB-9 Male | ||||||||||||||||||||||||||||||||||||||||
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| RS-422 Signal Wiring | ||||||||||||||||||||||||||||||||||||||||
| Point-to-Point 4 Wire Full Duplex | ||||||||||||||||||||||||||||||||||||||||
USB-8COMi-RM RS-422 Device |
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| RS-422 with Handshaking | ||||||||||||||||||||||||||||||||||||||||
USB-8COMi-RM RS-422 Device |
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| RS-485 Signal Wiring | ||||||||||||||||||||||||||||||||||||||||
| Point-to-Point 4-Wire Full Duplex | ||||||||||||||||||||||||||||||||||||||||
USB-8COMi-RM RS-485 Device |
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| Multidrop RS-485 2-Wire Half-duplex | ||||||||||||||||||||||||||||||||||||||||
USB-8COMi-RM RS-485 Device |
