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.
The USB-i485 module is a cost-effective way to add an industrial RS485 or RS422 serial port to your PC using a standard USB port. When connected to a PC USB port the USB-i485 module is automatically detected and installed as a native COM port compatible with ANY existing serial communication application. 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 handled automatically (autogating) by the converter.
Two independent and isolated RS485 networks can be supported by one USB-i485 module thus doubling the number of remote devices that can be connected. Multiple modules can also be installed when using powered USB hubs, thus allowing a hassle-free configuration of a multi serial system without any IRQ or DMA configuration. 1500Vdc isolation between the USB port and RS485/RS422 protects the PC from spikes and other possible transient voltages on the communication bus.
Software and USB connection lead included.
Specifications
Computer interface: USB V1.1 plug and play
Operating system virtual serial port driver
Supports Windows 98/ME/XP/2000/CE, MAC & Linux 2.4.20 or higher
Field interfaces: RS485 half duplex (dual buses), RS485 full duplex or RS422
RS485/RS422 selected on terminals
Automatic flow control (autogating) for RS485 half duplex
120 Ohms internal resistor termination available
Transmission rate: from 300 bps to 1Mbps
Maximum RS485/RS422 cable length : 1200m
Maximum number of devices on the RS485 network:
Half duplex: 2 x 32 devices
Full duplex: 32 devices
Data Transmit and Receive LED indicators
Powered by 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 suitable 1.5 m USB cable (type mini-B to A) is supplied with the module
RS485/422 connector: plug in 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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USB-i485 USB Converter to dual RS485 Isolated ports
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