Siemens SIMATIC S7-300 Module data Reference Manual

Analog Modules
4-78
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
250 OHM
4
5
250 OHM
6
7
250 OHM
8
9
250 OHM
10
11
12
13
250 OHM
14
15
250 OHM
16
17
250 OHM
18
19
250 OHM
A
+
–
CHO
V
+
–
CH1
V
+
–
CH2
V
+
–
CH3
V
+
–
CH4
V
+
–
CH5
V
+
–
CH6
V
+
–
CH7
21
29
26
27
24
25
22
23
33
32
35
34
37
36
39
38
28
40
31
30
ADC
ADC
Back-
plane
bus
interface
module
SF
Isolation
SF
Fault indicator – red
Figure 4-33 Module view and block diagram of the analog input module SM 331; AI 8 x 16 bits
Please note that in Figure 4-33, channel 0 is configured for current measurement
and channel 7 for voltage measurement.

Siemens SIMATIC S7-300 Module data Specifications

General

Series	S7-300
Manufacturer	Siemens
Protection Class	IP20
System	SIMATIC S7-300
Digital Inputs	Varies by module
Digital Outputs	Varies by module
Analog Inputs	Varies by module
Analog Outputs	Varies by module
Central Processing Unit	Varies by CPU model
Supply Voltage	24V DC or 120/230V AC
CPU Type	Varies (e.g., CPU 312, CPU 315, etc.)
Memory	Varies by CPU model
Communication Interfaces	MPI, PROFIBUS
Programming Languages	LAD, FBD, STL, SCL, GRAPH
Operating Temperature	0°C to 60°C
Storage Temperature	-40°C to 70°C
Relative Humidity	10% to 95% (non-condensing)