USB/RS-485 Converter

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€75.00 Tax Excluded

(€92.25 Tax Included )

Price negotiation
Delivery within 5-14 days
  • conversion of the USB standard to RS-485
  • power supply from the USB port, speed up to 115200bps
  • galvanic separation
  • Possibility to power the fuel level probe or fuel filler cap
  • LED diodes signaling the operating status and data transmission
  • easy installation on a PC

Guarantee 12m/24m

Delivery event up to 24h

Produced in Europe

12 years of experience


The USB / RS-485 converter is used to connect the fuel level probe RS-485 interface (or fuel filler cap) to a PC-class computer via a USB port
and simultaneously to power the device - the receiver with + 12V DC voltage.

How the converter works

The basic element of the converter - integrated circuit FT232BL- converts USB standard signals into standard UART signals.
The speed of transmitted data ranges from 300bps to 115200bps. The voltage levels of the UART standard are converted to voltage levels RS-485
using the SP485 system. The control of this system is provided by the optocouplers connected to the outputs of the FT232BL system, and the supply
via the + 5V / + 12V converter circuit with a 1W output power with an attached LDO stabilizer system with an output voltage of + 5V.

Green LEDs indicate power supply and red LEDs indicate data transmission. The converter can power the receiver (eg fuel level probe or fuel filler cap)
with a nominal voltage of approx. + 12V and power consumption max. 75mA. The converter uses internal current protection against the effects of shorting
the output power terminals (+ Uzas and -Uzas).

How to connect the converter

The converter should be connected to a fuel level probe type CS-27 / RS / U (or CS-27 / RS-232) or a fuel filler type BAK-Q60 (Q80) and a computer.
Detailed schema can be found in the user's manual.

Konwerter USB/RS-485

Data sheet

Differential output voltage for RS485
min. ±1.5V
USB Standard
USB1.1 i USB 2.0
USB type
B type
Galvanic isolation
Security requirements
PN EN 61010-1
Electromagnetic compatibility
PN EN 61000-6-4; PN EN 55024
USB port protection
Polymer fuse 0.5A
cir. 35g
Operating system for VCP
Windows XP/Server 2003/Vista/ Server 2008/7/8/8.1/10
+5V from USB port
Output voltage (+ Uzas) / Output current (Izas)
Power consumption from the USB port
Transmission speed
300...115200 bps
Maximum number of receivers / transmitters
Receiver input resistance
12 kΩ
The minimum input voltage

Specific References

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