Channel-Specific Module Parameters - Measured Value Smoothing; Channel-Specific Module Parameters - Monitoring Wire Break - Festo CPX Series Manual

4. Analogue input module CPX-4AE-I
4.4.6 Channel-specific module parameters – Measured value smoothing
4.4.7 Channel-specific module parameters – Monitoring wire break
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In order to suppress errors, the input data can be filtered
digitally, whereby the degree of filtering can be set by means
of parameterisation.
Filtering is carried out as follows:
– by forming the sum of n values,
– by subtracting an average value,
– by adding the current input value.
The following applies here: the greater n, the more the signal
will be filtered.
Wire break monitoring (Open Loop) can be activated by
means of appropriate parameterisation for the signal range
4 ... 20 mA.
The criterion for a wire break is software monitoring to
ensure that the value does not drop below the lower limit
(I
≤ 2.0 mA). If the value drops below the lower limit, the
IN
module will send an appropriate error message to the field bus
node .
Festo P.BE-CPX-AX-EN en 1107f