Initialization Parameters; Self-Calibration; Write Protection - Siemens PROFIBUS PA SIPART PS2 Manual

Care and Maintenance
Operating lock
5.2.1.8

Initialization parameters

5.2.1.9

Self-calibration

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5.2.1.10 Write protection

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126
To remove an positioner from the PROFIBUS line, its address should
be restored to 126 using this function, so that in future it can be linked
into this or another system if necessary.
If a cyclic master is already in communication with the positioner, the
address cannot be reset.
To prevent unwanted changes made by an acyclic master, the device
can be write protected. To do this, enter the information "On" in the
write protect sub-menu for the positioner.
In this menu the initialization parameters can be displayed, and also
selectively changed. This should however be performed only by spe-
cialists (see chapter 4.7 page 115 "Optimizing the control data"). This
function is also required if the electronics have to be changed but at
that time no initialization can be undertaken (see chapter 3.7 page 82).
To avoid personal injuries and equipment damage, self-calibration can
be performed using the PDM only if the positioner has already been
locally initialized.
CAUTION
Do not start self-calibration until you are sure that no personal injuries
and equipment damage will result. Once started, self-calibration can-
not be interrupted.
After completing the commissioning, the write protect can be set to pre-
vent an acyclic master from making unwanted changes. Locally the
positioner parameters can however be changed just as they could pre-
viously.
To do this, enter the information "On" in the write protect sub--menu for
the positioner. If anyone then attempts to write, the PDM will display
the report "Communication aborted".
NOTE
If "ON" has already been set using this "Hardware Write Protect"
screen, the binary input 1 in the positioner will already be parameteri-
zed to "bLoc1" or "bLoc2" and active. This means that writing using
PDM is inhibited.
SIPART PS2 PA Manual
A5E00127926-03