Endress+Hauser Levelflex FMP55 Operating Instructions Manual page 48

Operation methods
48
4. Setting the write protection switch (WP) on the main electronics module to the ON
position enables hardware write protection. Setting the write protection switch (WP)
on the main electronics module to the OFF position (factory setting) disables
hardware write protection.
 If hardware write protection is enabled, the Hardware locked option is displayed
in the Locking status parameter. In addition, on the local display the  symbol
appears in front of the parameters in the header of the operational display and in
the navigation view.
If hardware write protection is disabled, no option is displayed in the Locking
status parameter. On the local display, the  symbol disappears from in front of
the parameters in the header of the operational display and in the navigation
view.
5. Feed the cable into the gap between the housing and main electronics module and
plug the display module into the electronics compartment in the desired direction
until it engages.
6. Reverse the removal procedure to reassemble the transmitter.
Levelflex FMP55 FOUNDATION Fieldbus
X X X X X X X X X
20.50
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Endress+Hauser
A0015870