Functions/operations using PROFIBUS PA
11.2 Acyclic data transfer
SIPART PS2 with PROFIBUS communication
Operating Instructions, 09/2007, A5E00127926-07
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Functions
Use the Partial stroke test button to access the functions of the partial stroke test:
●
Start the partial stroke test.
●
Stop the partial stroke test.
●
Initialize the partial stroke test.
Changes become effective as soon as the Transfer button is pressed.
11.2.2.9
PST trace characteristic
Availability
This menu item is available only if the advanced diagnostics has been activated in the
parameter list in advance. Use this menu item to call the following sub-menus:
●
Read in the trace data
●
Save the trace data
●
PST trace characteristic
Read in the trace data
When executing a partial stroke test, the temporal course of the actual value is scanned in
the background and saved in the RAM of the positioner with a maximum of 1000 data points.
Use this menu item to read in the saved data in the PDM. The end of the reading process is
displayed in the PDM status bar.
Save the trace data
Use this menu item to save the currently read in temporal course of the partial stroke test in
the PDM as a reference in the PDM.
PST trace characteristic
Use this to call the characteristic display of the actual value course during the partial stroke
test. If you have already saved the trace data once, the saved and the currently read in
courses are displayed simultaneously.
11.2.2.10
Status monitoring
Availability
This menu item is available only if the advanced diagnosis has been activated in the
parameter list in advance. You can then activate and parameterize the following diagnostic
functions:
●
General control valve fault
●
Pneumatic leakage
