The USB-i485 module is a cost-effective way to convert RS485 or RS422 industrial buses to a USB interface. When connected to a PC USB port the USB-i485 module is automatically detected and is installed as a native COM port which is compatible with any existing serial communication application. Multiple modules can be installed when using USB hubs thus allowing a hassle-free configuration of a multi serial system without any IRQ or DMA configuration. 1500 Vdc isolation between the USB port and RS485/RS422 protects the PC from spikes or possible misconnections in the communication bus. The USB-i485 converter can be configured for four-wire (Full Duplex) RS422 and RS485 or two-wire (Half Duplex) networks. When operating in two-wire RS485 the data transfer control is automatically done by the converter. Two independent and isolated RS485 networks can be supported by one USB-i485 module thus duplicating the possible number of remote devices.
Features:
Specifications:
| Computer interface: | USB V1.1 Plug and Play |
| Field Interfaces: | RS485 Half Duplex (dual buses), RS485 Full Duplex or RS422 |
| Transmission rate: | From 300 bps to 250 kbps |
| MaximumRS485/RS422 cable length: | 1200 m |
| Power: | From the USB port |
| Consumption: | <100 mA |
| Isolation: | 1500 Vdc from USB interface and the RS485/RS422 interface |
| RS485/422 bus protection: | ±60 Vdc, 15 kV ESD |
| USB connection: | Mini-B connector |
| RS485/422 connector: | Screw terminal type accepting 1.5 mm² (16 AWG) wires |
| Operating environment: | 0 to 70°C, 10 to 90% relative humidity, non-condensing |
