Special Functions

USB Programming Adapter
AD-VarioPass 2

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The programming adapter AD-VarioPass 2 is a galvanic separated programming adapter, which is operated with the PC via an USB interface. With this USB programming adapter, the digital devices of the company Adamczewski can be parameterized. The AD-VarioPass 2 is simply connected to a free USB interface of the PC via the enclosed USB cable. The AD-VarioPass 2 has, on the secondary side, two device interfaces, which create the connection to the device with diverse cable connector, which are supplied. It has a jack plug (UART interface) and via a double terminal RS485 bus. Dependent on the device, the correct interface is selected. Both interfaces must never be used simultaneously. For the correct function of the programming adapter, the suitable hardware driver must be installed. As soon as the driver is installed correctly, a virtual COM interface is established, via which the communication to the device is realised. To obtain access to the parameter of the connected device, it is recommended to install the free-of-charge configuration software AD-Studio. The current versions of the software and of the hardware driver can be downloaded from the download area of the homepage of the company Adamczewski. When installing the software AD-Studio, the hardware driver for the programming adapter AD-VarioPass 2 can also be installed. With the AD-VarioPass 2 and the configuration software AD-Studio, all digital Adamczewski devices can be parameterized.


Access to all digital devices of the company Adamczewski from the PC.


  Specific characteristics

  • USB-port enables connection to a PC - galvanically isolated from:
  • UART-port enables connection to relevant Adamczewski device
  • RS485-port enables connection to relevant Adamczewski device
  •   Business data

    catalog number AD-VarioPass 2



      Technical specifications

    PC connection / supply
    Voltage range USB 4,8 ... 5,2 V DC
    Nominal voltage USB 5 V DC
    Power consumption < 1 W (depending on the output load)
    Device interface 1
    UART Standard UART device interface for the connection of most Adamczewski devices
    Device interface 2
    RS485 BUS RS485 bus-interface for connecting BUS-enabled devices
    Dimensions (WxHxD) 42x22x63 mm
    Type of protection IP 20
    Connection method PC USB interface
    Connection method interface 1 stereo jack (UART)
    Connection method interface 2 2-wire plug-in terminal (RS485)
    Weight ~ 50 g
    Manner of fastening hand-held case
    Environmental conditions
    Ambient temperature 0 ... 50 C
    Storage and transport -10 ... 70 C (no thawing)
    Product family standard EN 61326 1)
    Emitted interference EN 55011, CISPR11 Cl. B
    Electrical safety requirements
    Product family standard EN 61010-1
    Overvoltage category II
    Pollution degree 2
    Galvanic isolation, test voltages
    USB to outputs 1 kV, 50 Hz (1 min.)
    Protection circuits
    USB electrical surge protection
    RS485 bus interface electrical surge protection
    1) During checking, slight signal deviations are possible.