Compatibility with previous versions
The functions are upward compatible.
Higher software versions support all functions included in previous software versions.
Due to the increasing number of functions integrated into more recent software versions, restrictions may occur when transferring parameter sets from higher software versions to lower ones.
The following applies in general:
All parameter values are accepted that can be assigned. If the parameter set includes a parameter that the Firmware does not, this value will be refused. If the Firmware includes a parameter that the parameter set does not, this parameter will undergo factory adjustment. If a new Firmware was replaced by an old Firmware, the device will enter an error into the 'Parameter set restored' logbook. The error response is parameterised in code C635, the default value is 'Error'. The error can be quit but keeps on popping up every time the device is switched-on until the user has performed the 'Save start parameters' function.
If an old Firmware version is replaced by a new one, the device merely enters a piece of information into the logbook so the device can be operated without the need to reset the error. In this case the default response is 'Information'.
