
Analog modules
5.23 Analog input module SM 431; AI 16 x 16 Bit (6ES7431-7QH00-0AB0)
S7-400 Automation System Module Data
294 Reference Manual, Edition 09/2009, A5E00850736-06
Block diagram of the SM 431; AI 16 x 16 Bit
A
D
CH0
CH1
+ 15 V
+ 5 V
0 V
-15 V
+ 5 V
0 V
I
L+
M
PGA
CH14
CH15
Meas. range
module 0
Meas. range
module 7
Diagnostics
in
L+ loop
Multiplexer
Opto relay
Signal
jumper-
ing
const
Bus control
Bus S7-400
Bus S7-400
Figure 5-33 Block diagram of the SM 431; AI 16 x 16 Bit
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