Siemens sitrans LU01 - Manual (Page 34)

Page 28 SITRANS LU01 – INSTRUCTION MANUAL 7ML19985BE02
Pa
ra
m
e
te
rs
Parameter Reset Features
On initial power up, all parameters are at original values. In many cases, when a
Parameter Value is altered, associated Parameter Values are automatically altered
accordingly.
To return an operator adjusted Parameter Value to the preset value, with the appropriate
Index and Parameter Number displayed, press ,
.
To reset all parameters to preset
values, refer to Master Reset (P999) on page 84.
Programming Security
All operator programming is retained in non-volatile memory, immune to power
interruptions. When programming is complete, the programmer may be removed and
locked away to prevent inadvertent programming alteration. As well the Lock (P000)
parameter may be used.
P000 Lock
Secures the SITRANS LU01 from changes
Access this parameter directly (type 000) and enter any value (except 1954) to secure
programming lock. To remove the programming lock, access this parameter and enter
1954
. You cannot scroll to this parameter.
Note:
Perform a Master Reset (P999) if the SITRANS LU01 was bench tested using
arbitrary Parameter Values before system installation, following an EPROM
replacement, or whenever complete reprogramming is required.
Values
1954 * OFF (programming permitted)
-1
Simulation Controls (relays energize based on simu-
lated level)
other lock activated (programming secured)
WARNING: Use this lock as backup security only. It uses a fixed
value which can be discovered by unauthorized personnel.