Siemens SIMATIC S7-300 Module data User Manual

Analog modules
6.6 Analog input module SM 331; AI 8 x 13 Bit;(6ES7331-1KF01-0AB0)
S7-300 Automation System Module data
Manual, 08/2006, A5E00105505-04
6-39
Wiring: Voltage measurement
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Figure 6-10 Block diagram and wiring diagram
① Voltage measurement (± 5V, 10V, 1...5V, 0...10V)
② Voltage measurement (± 50 mV, ± 500 mV, ± 1 V)
③ Potential compensation
④ Internal supply
⑤ + 5V from backplane bus
⑥ Logic and backplane bus interface
⑦ Electrical isolation
⑧ Multiplexer
⑨ Analog to Digital Converter (ADC)
⑩ Source of current

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)