Siemens Simatic S7-400 - Manual (Page 316)

Analog Modules
5-100
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Block Diagram of the SM 431; AI 16 x 13 Bit
Tr
Tr
Tr
Tr
Tr
Tr
Tr
Tr
*
*Voltage/current sensor and M must
be connected to the chassis ground
of the rack *Voltage/current sensor and M must
be connected to the chassis ground
of the rack
Tr = Transducer = Transmitter
*
*
*
*
*
*
*
*
Measuring range module
Control and backplane bus interface
Figure 5-33 Block Diagram of the SM 431; AI 16 x 13 Bit