Siemens SIMATIC S7-300 Module data - Module View and Block Diagram of the SM

Analog Modules
4-87
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
Terminal connection diagram and block diagram of the SM 331; AI 8 x 16 bits
2
20
1
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
DC
to
DC
LM
Interface
module
logic
and
back-
plane
bus
ADC
ADC
ADC
22
40
21
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
M
L+
Channel 0
Channel 1
Channel 2
Channel 3
250 
250 
250 
250 
250 
250 
250 
250 
V
M0+
M0–
A
V
M1–
M1+
A
V
M2+
M2–
A
V
M3–
M3+
A
Channel 4
Channel 5
Channel 6
Channel 7
V
M4+
M4–
A
V
M5–
M5+
A
V
M6+
M6–
A
V
M7–
M7+
A
ADC
SF
SF
Fault indicator – red
Figure 4-34 Module View and Block Diagram of the SM 331; AI 8 x 16 bits