Analog Modules
4-114
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
4.21.2 Measuring Methods of the SM 331; AI 8 x 13 bits
Measuring Methods
You can set the following measuring methods for the input channels:
• Voltage measurement
• Current measurement
• Resistance test
You perform the setting with the “measuring method” parameter in STEP 7.
Unused Channels
Set the “measuring method” parameter for unused channels to “disabled”. In this
way you shorten the scan time of the module.
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