Novus USB-i485 Instruction Manual

Rs485/rs422
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USB-i485 Converter
RS485/RS422
INSTRUCTION MANUAL V1.0x D
CE MARK
This is a Class A product. In a domestic environment, this product may cause radio interference in which case the user may be required to take
adequate measures.
NOVUS PRODUTOS ELETRÔNICOS LTDA.
1/12

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Summary of Contents for Novus USB-i485

  • Page 1 RS485/RS422 INSTRUCTION MANUAL V1.0x D CE MARK This is a Class A product. In a domestic environment, this product may cause radio interference in which case the user may be required to take adequate measures. NOVUS PRODUTOS ELETRÔNICOS LTDA. 1/12...
  • Page 2: Table Of Contents

    SERIAL PORT (COM PORT) ASSIGNMENT - WINDOWS ..........................7 CONNECTIONS ........................................8 HALF-DUPLEX RS485 HALF-DUPLEX (2 WIRES) ..............................8 FULL-DUPLEX RS485 FULL-DUPLEX (4 WIRES) ...............................9 RS422 ............................................9 CONFLICTS WITH OTHER USB DEVICES UNDER WINDOWS ........................10 TECHNICAL SPECIFICATIONS ..................................11 WARRANTY .........................................12 NOVUS AUTOMATION 2/12...
  • Page 3: Safety Alerts

    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. NOVUS AUTOMATION 3/12...
  • Page 4: Presentation

    PRESENTATION The USB-i485 Converter 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 Converter is automatically detected and is installed as a native COM port, which is compatible with any existing serial communication application.
  • Page 5: Dimension

    DIMENSION The USB-i485 Converter has the following dimensions: Fig. 01 – USB-i485 Converter NOVUS AUTOMATION 5/12...
  • Page 6: Usb Driver Installation

    • usbserial (generic driver for USB-Serial conversion); • usbcore (basic driver for USB devices). See the documentation on the device page on our website. The Virtual Driver COM file provides information about how to perform the installation. NOVUS AUTOMATION 6/12...
  • Page 7: Serial Port (Com Port) Assignment - Windows

    SERIAL PORT (COM PORT) ASSIGNMENT - WINDOWS A few seconds after connection of the USB-i485 Converter, Windows operating system assigns a COM port number for communication. The assigned COM port number will not change in future connections to the same USB port. Users can easily identify and modify the assigned COM port in: Control Panel / System / Hardware / Device Manager / Ports (COM &...
  • Page 8: Connections

    The need to install termination resistors depends on the total length of the communication bus and the communication speed (Baud Rate). The USB-i485 Convert has built-in termination resistors, which can be installed by wiring terminals RT1 (8) or RT2 (3) as shown in dashed lines in the last figure.
  • Page 9: Full-Duplex Rs485 Full-Duplex (4 Wires)

    To set this mode of operation, the MOD terminal (pin 4) must be connected to terminal GND (pin 5). In this mode two pairs of wires are used. Data from the USB-i485 Convert to the networked devices are transmitted through one pair, and the other pair carries data from the devices to the USB-i485 Convert.
  • Page 10: Conflicts With Other Usb Devices Under Windows

    CONFLICTS WITH OTHER USB DEVICES UNDER WINDOWS Installation of the USB driver for the USB-i485 converter may result in conflicts with existing USB devices in the computer (mouse or other Serial/USB devices, for example). In this case, follow the procedure below to restore functionality of the affected device: o to the Windows Control Panel and open the USB-i485 Converter properties in: Control Panel / System / Hardware / Device Manager / Ports (COM &...
  • Page 11: Technical Specifications

    Automatic flow control for RS485 Half Duplex. Internal Terminating 120 Ohms internal resistors termination enabled by jumpers. Resistors LEDs Transmission and reception of data. ABS Housing 70 x 60 x 18 mm. Certifications Table 02 – Technical Specifications NOVUS AUTOMATION 11/12...
  • Page 12: Warranty

    WARRANTY Warranty conditions are available on our website www.novusautomation.com. NOVUS AUTOMATION 12/12...

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