Siemens Simatic S7-400 - Manual (Page 355)

Analog Modules
5-139
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Displaying Parameter Assignment Errors
The SM 431; AI 8 16 Bit has diagnostics capability. Below you will find an
overview of the displays that are possible for modules with parameter assignment
errors.
Table 5-76 Diagnostic Information of the SM 431; AI 8 16 Bit
Incorrect Parameter
Assignment
Possible Display Explanation
Of the module
•
Module malfunction
•
Internal malfunction
•
Wrong parameters
•
Module not parameterized.
You can find an
explanation of the
diagnostic information in
Tables 4-8 and 5-47 on
Pages 4-10 and 5-65.
Affecting certain
channels
•
Module malfunction
•
Internal malfunction
•
There is a channel error
•
Wrong parameters
•
Channel information available
•
Vector channel error
•
Channel parameter assignment
error
•
User calibration doesn’t
correspond to the parameter
assignment
g
5.24.2 Measuring Methods and Measuring Ranges of the SM 431;
AI 8
16 Bit
Measuring Methods
You can set the following measuring methods for the input channels:
• Voltage measurement
• Current measurement
• Temperature measurement
You specify the setting by means of the “Measuring Type” parameter in STEP 7.
Unused Channels
Disable the “Measuring Type” parameter for unused channels. In this way you
shorten the scan time of the module.