System components for the Simatic^® S5 115U and  S5 135U from Siemens  

Communication processors VIPA BG89A, CP143plus, H1 & TCP/IP communication processor. VIPA BG41, serial multi protocol communication processor. Features, 3964(R)/RK512, 3964(R), STX/ETX, Open ASCII, Modbus. 1 Interface port. VIPA BG42, serial multi protocol communication processor. Features, 3964(R)/RK512, 3964(R), STX/ETX, Open ASCII, Modbus. 2 Interface ports. VIPA BG43, serial multi protocol communication processor. Features, 3964(R)/RK512, 3964(R), STX/ETX, Open ASCII, Modbus. 3 Interface ports. VIPA BG41 High speed counter card. 1 Interface port. (max. 6 counter channels) VIPA BG42 High speed counter card. 2 Interface ports. VIPA BG43 High speed counter card. 3 Interface ports. Analog Input and Output cards VIPA BG41 analog I/O card. 1 Interface port. VIPA BG42 analog I/O card. 2 Interface ports. VIPA BG43 analog I/O card. 3 Interface ports. Digital Input and Output cards VIPA Digital 32 channel Input card for the 115U. Common connected. VIPA Digital 32 channel Output card for the 115U.. VIPA Digital 32 channel Input card for the 135U. VIPA Digital 32 channel Output card for the 135U