Novus USB-i485 User manual

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USB-i485 Converter
RS485/RS422
INSTRUCTION MANUAL V1.0x H

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1. SAFETY ALERTS ..................................................................................................................................................................................................3
2. PRESENTATION ...................................................................................................................................................................................................4
3. DIMENSION ...........................................................................................................................................................................................................5
4. USB DRIVER INSTALLATION ..............................................................................................................................................................................6
4.1 WINDOWS ......................................................................................................................................................................................................6
4.2 LINUX..............................................................................................................................................................................................................6
4.3 MAC.................................................................................................................................................................................................................6
5. SERIAL PORT (COM PORT) ASSIGNMENT - WINDOWS.................................................................................................................................7
5.1 DETERMINATION ..........................................................................................................................................................................................7
5.2 SELECTION....................................................................................................................................................................................................7
5.3 IMPORTANT RECOMMENDATION ..............................................................................................................................................................8
6. CONNECTIONS.....................................................................................................................................................................................................9
6.1 HALF-DUPLEX RS485 HALF-DUPLEX (2 WIRES)......................................................................................................................................9
6.2 FULL-DUPLEX RS485 FULL-DUPLEX (4 WIRES).....................................................................................................................................10
6.3 RS422............................................................................................................................................................................................................10
7. LED OPERATIION...............................................................................................................................................................................................11
8. CONFLICTS WITH OTHER USB DEVICES IN WINDOWS...............................................................................................................................12
9. TECHNICAL SPECIFICATIONS .........................................................................................................................................................................13
9.1 CERTIFICATIONS ........................................................................................................................................................................................13
10. WARRANTY.........................................................................................................................................................................................................14

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1. SAFETY ALERTS
The symbols below are used in the device and throughout this manual to draw the user’s attention to important information related to device safety
and use.
CAUTION
Read the manual fully before installing and
operating the device.
CAUTION OR HAZARD
Risk of electric shock.
ATTENTION
Material sensitive to static charge. Check
precautions before handling.
All safety recommendations appearing in this manual must be followed to ensure personal safety and prevent damage to the instrument or system.
If the instrument is used in a manner other than that specified in this manual, the device’s safety protections may not be effective.

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2. PRESENTATION
USB-i485 Converter is a cost-effective way to convert RS485 or RS422 industrial buses to a USB interface. By connecting the USB-i485
Converter to a computer USB port, it will be automatically detected and installed as a native COM port, compatible with any existing serial
communication application.
Multiple converters can be installed when using USB hubs, allowing you to easily set up a multi-serial system without any worries about IRQ or
DMA settings.
1500 Vdc galvanic isolation between the USB port and RS485/RS422 protects the computer from spikes or possible misconnections in the
communication bus.
USB-i485 Converter can be configured for RS422, 4-wire RS485 (Full Duplex), or 2-wire RS485 (Half Duplex) networks. When operating in 2-wire
RS485, the data transfer control is automatically controlled by the converter. Two 2-wire RS485 networks can be connected to the converter, thus
duplicating the possible number of remote devices.

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3. DIMENSIONS
USB-i485 Converter has the following dimensions:
Figure 1 –Dimensions