USB-i485 USB-i485 The 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 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 spykes or possible misconnections in the communication bus.
The 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 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 7/Vista/XP/2008Server/ 2003Server/98/ME/2000/CE, MAC and Linux 2.4.20 or above. 64 bit options for latest operating systems.
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 250 kbps.
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.