Safety settings, user level PN50 bis PN53
With the parameters in the security settings, access to the program numbers is regulated
through the setting of various user levels. The user levels divide the access into various levels.
The user is only given access to the settings authorised by the system operator, such as the
setting of thresholds. The lower the figure for the user level given under PN52, the lower the
level of security of the unit parameters against user intervention. The plant operator can (if
necessary) also block these settings against access by the operating staff by means of a given
authorisation code for the user level in PN53. Only when the value of PN53 is parameterised in
PN50 the plant operator has access to the parameters authorised for him in the user level.
Examples:
26
8. Program number description
User level (PN= )
0
1
2
3
4
5
6
7
8
Access to:
PN
Programming lock
50
X X X X X X X X X
Serial number
200
X X X X X X X X X
Display brightness
19
X X X X X X X X
Threshold value
61, 71, …
X X X X X X X
Switching point parameter
59…95
X X X X X X
Set value for taring
7
X X X X X
Interfaces parameter (Device option)
32…34
X X X X
Analog output parameter (Device option)
20…23
X X X X
Measuring input parameter
0…18
X X X
Linearisation parameter for measuring input
100…130
X X X
Release code / user level
51, 52, 53
X
The parameterised user level PN52 is active as long as the authorisation code PN51 and
programming lock PN50 are different. On delivery both parameters are set to 0000, so that the
programming lock is deactivated.
When changing to programming mode, the device switches to the first authorised program
number. If the user level PN52 is parameterised at =3, for example, access to the program
numbers of the calibration points is authorised but changing the measuring input (PN0) is not
possible at this user level.
In order to obtain access to all program numbers at a later stage (corresponds to user level 0),
the
4-digit locking code entered under PN51 must, in order to gain authorisation under PN50,
be entered again and confirmed by activating button
[P]
for around 1 second. Access can then
be made to all program numbers.
Caution!
If the authorisation code becomes lost, the unit can be set to the default
value 0000 at the manufacturer's without any data loss.
