Operating Instructions

Table Of Contents
For access via SIMATIC PDM open the menu View – Process Variables and check the field
Electronics Temperature.
Highest Value (3.2.2.)
Read only. Displays (in degrees C) the maximum temperature recorded by the internal
electronics. The high and low values are maintained over a power cycle.
Via SIMATIC PDM navigate to Maintenance and Diagnostics > Electronics Temperature.
Lowest Value (3.2.3.)
Read only. Displays (in degrees C) the minimum temperature recorded by the internal
electronics. The high and low values are maintained over a power cycle.
Via SIMATIC PDM navigate to Maintenance and Diagnostics > Electronics Temperature.
Service (4.)
Note
Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly stated.
Master Reset (4.1.)
Note
Following a reset to Factory Defaults, complete reprogramming is required.
Resets all parameter to factory defaults, with the following exceptions:
Device Address (5.1.) remains unchanged if the reset command is sent remotely (via AMS,
PDM, DTM, FC375) but is reset to 0 if the reset command is sent via LUI.
Write Protect (6.2.1.) and PIN to Unlock (6.2.2.) values are not reset.
Auto False Echo Suppression (2.8.7.1.) learned TVT and Auto False Echo Suppression
Range (2.8.7.2.) are not lost.
Options * Idle or Done (Return to previous menu)
Factory Defaults
To perform a reset to factory defaults via SIMATIC PDM, open the menu Device Master Reset
and click on Factory Defaults.
Parameter reference
SITRANS LR250 with mA/HART
Operating Instructions, 10/2019, A5E32220602-AG 131