Manual Datafox ZK-Box V4 page 11 date: 16.01.2018 Version: 04.03.06.XXfore test each setup with the corresponding device or on a device with the same hardware optionsand firmware.4.3.4. Device Firmware and Communications DLLA firmware supports certain functions, dependent on the hardware options. The communication DLLis the interface between the firmware and the DatafoxStudioIV or your processing software. There-fore, the firmware must always have the same or a lower version number as the communicationDLL. Note:If your application uses a newer version of the DLL than the firmware does, you canonly use functions that are supported by the firmware.Otherwise, you will receive an error message (e.g. function not supported) which hasto be analyzed.4.3.5. Communications DLL and DatafoxStudioIV Note:The DatafoxStudioIV and the communication DLL are developed and released as abundle. Therefore, they have to be used as a bundle.A newer version of DatafoxStudioIV does not work with an older DLL.4.3.6. DatafoxStudioIV and Device SetupWith the DatafoxStudioIV, you create a device setup (application program) for the Datafox device.That means that in the setup only those functions were defined which were available in the Data-foxStudioIV version at the time of the setup creation. The DatafoxStudioIV you use for opening adevice setup may thus only be newer but never older than the DatafoxStudioIV version you used tocreate the device setup. Note:The updates are always available for download on our homepage www.datafox.de.! Caution:When new devices are delivered, the latest firmware is loaded on the devices. If youwish to work with an older firmware version, please perform a downgrade. Pleaseobserve the compatibility notes in the release notes of the respective firmware ver-sion.