Siemens Simatic M7-400 Manual do Utilizador Página 355

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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.
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