Siemens SIMATIC S7-300 Module data User Manual

Priniples of analog value processing
4.6 Wiring thermocouples
S7-300 Automation System Module data
Manual, 08/2006, A5E00105505-04
4-17
Connecting thermocouples via compensating box
If all thermocouples connected to the module's inputs share a common reference junction,
compensate the circuit as follows:
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Figure 4-15 Connecting thermocouples to electrically isolated analog inputs via compensation box
Note
To compensate the analog input modules, always use compensation boxes with a reference
junction temperature of 0 °C.

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)