Locking Keys - Siemens SITRANS P300 Operating Instructions Manual

6.5.10

Locking keys

Introduction
Functions which can generally be carried out via the keys can be locked in mode 10.
Application examples for a lock include the safeguarding of the saved parameters.
Lock options
You have the following lock options on the pressure transmitter:
Table 6-5
Lock mode
0
LA
LO
LS
L
Requirements
You are familiar with the correct operation of the transmitter and the associated safety
information.
Note
Check the measured value display function to see whether the desired setting is displayed.
SITRANS P300 with HART communication
Operating Instructions, 06/2005, A5E00359579-02
Meaning of the lock modes
Meaning
The device can be operated by means of the keys and HART communication.
Keys on the transmitter are locked.
Exception:
Releasing key lock
•
The device can be operated by means of HART communication.
Keys on the transmitter are partially locked.
Exception:
Setting zero point
•
Releasing key lock
•
The device can be operated by means of HART communication.
Keys on the transmitter are partially locked.
Exception:
Setting zero point
•
Setting limit point
•
Releasing key lock
•
The device can be operated by means of HART communication.
Write protection
Operation via the keys and HART communication is locked.
Exception:
Releasing key lock
•
Operation
6.5 Local operation
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