Siemens SIMATIC ET 200SP HA Equipment Manual page 33

Parameter "Number of signal changes" = 7
Process value
Diagnostics
Figure 5-2
Number of signal changes
Specifies the number of permissible signal changes within a monitoring window. A flutter error
is signaled after the configured number is exceeded.
Value range: 2 to 31
Monitoring window (s)
Specifies the time for the monitoring window of the flutter monitoring.
You have the option of setting times from 0.5 s to 100 s for the monitoring window.
Sensor supply
You use this parameter to select between the internal or external sensor supply.
An internal sensor supply must be selected for use of the short-circuit test.
Dependencies:
• If the following conditions are fulfilled at the same time, then the "Sensor supply" parameter
for channel "n+8" is set to "external" and cannot be edited. The setting of the sensor supply
for channel "n" remains editable.
– With the "Sensor evaluation" parameter, the option "1oo2 (2v2) evaluation, equivalent"
– With the parameter "Sensor supply for 1oo2" the option "Both sensors on one sensor
F-DI 16x24VDC HA
Equipment Manual, 08/2021, A5E45647528-AD
Time "Monitoring window (s)" = y
8 signal changes
detected
8 signal changes
detected
Diagnostics "Flutter error"
Incoming => "Signal"
Principle of flutter monitoring
or "1oo2 (2v2) evaluation, non-equivalent" is selected.
supply" is selected.
3 x "Monitoring window (s)" = 3y
6 signal changes
detected
Diagnostics "Flutter error"
Outgoing => "Reset"
Parameters/address space
5.2 Description of parameters
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