16.1.8 SFC 235 - SYNCHRON - Synchronization page frameThe SYNCHRON block initializes the synchronization between CPU and CP during theboot process. For this it has to be called from the starting OBs. Simultaneously the transi-tion area of the interface is deleted and predefined and the CP and the CPU agree aboutthe block size.ParametersName Declaration Type DescriptionSSNR IN INT Interface numberBLGR IN INT Block sizePAFE OUT BYTE Parameterization errorTo avoid long cycle run-times it is convenient to split large data amounts into smallerblocks for transmitting them between CP and CPU. You declare the size of these blocksby means of "block size". A large block size = high data throughput, but also longer run-times and therefore a high cycle time strain. A small block size = smaller data throughput,but also shorter run-times of the blocks. Following block sizes are available:Value Block size Value Block size0 Default (64byte) 4 128byte1 16byte 5 256byte2 32byte 6 512byte3 64byte 255 512byteParameter type: IntegerValid range: 0 ... 255DescriptionBlock sizeVIPA SPEED7System BlocksFetch/Write Communication > SFC 235 - SYNCHRON - Synchronization page frameHB00 | OPL_SP7 | Operation list | en | 18-30902
