Siemens SIMATIC User Manual

Analog modules
6.11 Analog input module SM 331, AI 6 x TC isolated (6ES7331-7PE10-0AB0)
S7-300 Module data
428 Manual, 06/2017, A5E00105505-AJ
If a reference value above the permitted temperature limit is received in DR2, it will cause a
reference channel fault, which is displayed in the standard channel diagnostic data. If
enabled, a diagnostic interrupt is sent.
Note
If an analog input module such as AI 8 x thermoresistor is used to measure the reference
-
junction temperature, the thermoresistor module parameters for the output structure and the
measuring accuracy must be represented by bytes 0 and 1 in data record 2. This is shown in
the figure "Structure of data record 2 for SM 331; AI 6 x TC". If the external thermoresistor
module does not provide correct information about data structure and scaling, it will lead to
inaccurate measurements being output by the isolate
d SM 331; AI 6 x TC module.

Siemens SIMATIC Specifications

General

Product type designation	SIMATIC
CPU	Varies by model
Memory	Varies by model
Input/Output	Varies by model
Communication	Varies by model
Programming Language	STEP 7
Operating Temperature	0°C to 60°C (varies by model)
Protection Class	IP20
Category	Programmable Logic Controller (PLC)