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USB to RS485 Converter
Description
The USB-i485 module is a cost-effective way to convert RS485 or RS422 industrial buses to a USB interface. Muliple 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 spykes or possible misconnections in the communication bus
Product
User Manual >>	Computer interface: USB V1.1 Plug and Play. Operational via system virtual serial port driver. Supports Windows 98/ME/XP/2000/CE, MAC & Linux Field Interfaces: RS485 Half Duplex (dual buses), RS485 Full Duplex or RS422. Jumper selected RS485 / RS422. Automatic flow control for RS485 Half Duplex. 120 Ohms internal resistors termination Transmission rate: from 300 bps to 1Mbps. MaximumRS485/RS422 cable length : 1200 m Maximum number of devices in the RS485 network: - Half Duplex: 2 x 32 devices - Full Duplex: 32 devices Data transmission and reception LED indicators 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. A 1.5 m cable with plugs mini-B and A is provided with the module. RS485/422 connector: screw terminal ABS enclosure: 70 x 60 x 18 mm Operating environment: 0 to 70°C
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.
RS485 Half Duplex RS485 Full Duplex
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