
Analog modules
5.20 Analog input module SM 431; AI 8 x 14 Bit (6ES7431-1KF10-0AB0)
S7-400 Automation System Module Data
258 Reference Manual, Edition 09/2009, A5E00850736-06
Block diagram of the SM 431; AI 8 x 14 Bit
24 V
0V
0V
- 15V
+ 5V
+ 15V
ENABLE
CH0
CH1
CH6
CH7
L+
M
A
D
OPTO RELAY
Measuring
range
module 0
Bus control
Measuring
range
module 3
MULTIPLEXER
Bus S7-400
Bus S7-400
Bus S7-400
Figure 5-25 Block diagram of the SM 431; AI 8 x 14 Bit
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