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NOVUS PRODUTOS ELETRÔNICOS LTDA. 

 

1/12 

 

   

 

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. 

 

Summary of Contents for USB-i485

Page 1: ...A 1 12 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 ...

Page 2: ...ON 6 4 1 WINDOWS 6 4 2 LINUX 6 4 3 MAC 6 5 SERIAL PORT COM PORT ASSIGNMENT WINDOWS 7 6 CONNECTIONS 8 5 1 HALF DUPLEX RS485 HALF DUPLEX 2 WIRES 8 5 2 FULL DUPLEX RS485 FULL DUPLEX 4 WIRES 9 5 3 RS422 9 7 CONFLICTS WITH OTHER USB DEVICES UNDER WINDOWS 10 8 TECHNICAL SPECIFICATIONS 11 9 WARRANTY 12 ...

Page 3: ... 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 p...

Page 4: ...us 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 spikes or possible misconnections in the communication bus 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 tran...

Page 5: ...NOVUS AUTOMATION 5 12 3 DIMENSION The USB i485 Converter has the following dimensions Fig 01 USB i485 Converter ...

Page 6: ...for the F232R USB UART device in the Other Devices category Double click it and click on the Update Driver button e Choose the Browse my computer for driver software option f Select the Drivers Windows Let the Include subfolders selected g If a window asking whether you want to install this driver pops up choose to install h Wait a few more seconds A window displaying the installation success will...

Page 7: ... USB Serial Port device click with the right mouse button and select Properties Select Port Settings and click on the Advanced button In COM Port Number list select the serial port to be assigned Some serial port can be marked as in use Only select one of these ports if you are sure it is not being used by any other peripheral in your computer In some cases serial port can be marked as In Use even...

Page 8: ...he MOD terminal pin 4 must be left unconnected This is the usual RS485 connection A single twisted pair is used for data transmission and reception Multiple RS485 devices are connected in a single bus as shown in the next figure Devices from different vendors may use different names for the data signal terminals In the following figure different identification schemes are presented for each device...

Page 9: ...If a common wire is not connected to all devices all must be properly grounded according to the manufacturer recommendation For the USB i485 Converter the proper grounding terminal is pin 5 GND The need to install termination resistors depends on the total length of the communication bus and the communication speed baud rate The USB i485 Converter has a built in termination resistor which can be i...

Page 10: ...le 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 LPT Select the desired USB Serial Port device click with the right mouse button and select Properties Select Port Settings and click on the Advanced button Uncheck the Serial En...

Page 11: ...32 devices Power From the USB post Consumption 100 mA Isolation 1500 Vcc 1 minute from USB interface and the RS485 RS422 interface RS485 RS422 bus protection 60 Vcc 15 kV ESD USB Connection Mini B connector A 1 5 m cable with plugs mini B and A is provided with the device RS485 422 Connector Screw terminal type accepting 1 5 mm 16 AWG wires Operating Environment 0 to 50 C 10 to 90 relative humidit...

Page 12: ...NOVUS AUTOMATION 12 12 9 WARRANTY Warranty conditions are available on our website www novusautomation com ...

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