Siemens SITRANS P DS III - Electrical Damping (Filter Time Constant); Key Lock and Write Protection

Operator control functions via PROFIBUS
7.5 Electrical damping (filter time constant)
SITRANS P DS III with PROFIBUS PA
116 Operating Instructions, 06/2013, A5E00053276-07
See also
Level measurement (Page 108)
Pressure measurement (Page 107)
7.5
Electrical damping (filter time constant)
You can set the time constant of electrical damping (filter time constant) to a point within a
range of 0 to 100 seconds. It always applies to the "Pressure" device variable (DV0) and
thus to the measured values derived from it.
See also
Setting/adjusting electrical damping (Page 79)
7.6
Key lock and write protection
You can set operation blocks according to the following table.
Table 7- 7 Keypad locks
Lock
Effect
Switching on/off
Display
Keypad and function
block (hardware
write protection)
Parameter changes with SIMATIC PDM and
setting changes made locally are blocked.
Independent of other operating locks.
Local
Mode 10
L
Write block Write block for parameterization using
SIMATIC PDM. Local operation is possible.
With PROFIsafe devices, password protection
can be set for parameter modifications via bus.
Refer to Write protection (Page 144).
SIMATIC PDM LC
Local operation If local operation is not enabled, no access is
possible using the keypad. Regardless of the
setting of this parameter, local operation is
automatically enabled 30 seconds after loss of
communication. After communication is
restored, the "Local operation permitted"
parameter is restored to its original setting in
the device.
SIMATIC PDM LA
Combination of write
blocking and no
enabling of local
operation
Acts like an active keypad block. Changes to
parameters (except for keypad block) are not
possible either with local operation or using
SIMATIC PDM.
SIMATIC PDM LL
Blocks can also be combined: