Special Hardware Requirements:
One EM235 expansion module, analog combination AI 3/AQ 1 x 12 bits
The new 22x CPUs can be configured to automatically handle filtering of analog inputs. This program example is a first approach to the use of the analog module EM235 3AI/1AQ in combination with an S7-200 (CPU 212, CPU 214, CPU 215 or CPU 216). This application computes a running average of an analog input for a selected number of samples and tests to determine how to set the error output.
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