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Radio & GSM Telemetry \ Serial Devices \ USB-RS485 converter

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USB-RS485 converter

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. 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.

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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.
- Computer interface: USB V1.1 Plug and Play.
- Operational system virtual serial port driver.
- Supports Windows 98/ME/XP/2000/CE, MAC & Linux 2.4.20 or superior.
- 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 enabled by jumpers.
- 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 type accepting 1.5 mm² (16 AWG) wires.
- ABS enclosure: 70 x 60 x 18 mm
- Operating environment: 0 to 70°C, 10 to 90% relative humidity, non-condensing.

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For further information, technical advice, or a quotation please call or email us. If you are not sure which product you need one of our technical sales advisors will be happy to discuss your application. We also accept company purchase orders by fax or post. Credit card orders can also be placed over the phone for any product.

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8816001035

USB-i485 USB Converter to dual RS485 Isolated ports

■	Data Sheet

■	User Manual and Drivers

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