2 Interface modules
2.1 Principle of data transmission 2-1
2.2 Building block structure 2-2
2.2.1 Building block BG41 2-2
2.2.2 Building block BG42 2-4
2.2.3 Building block BG43 2-6
2.3 Allocation of the backplane connector 2-8
2.3.1 Backplane connector X1 2-8
2.3.2 Backplane connector X2 2-8
2.4 Block diagram of firmware 2-9
2.5 Firmware’s memory distribution 2-9