Lcd Display; Security; Loi Security - Emerson Rosemount 2051 Reference Manual

Configuration
November 2016
a. In the Basic Setup >> Output >> Output Limits >> Upper Limit Alarm Limits field, enter
b. In the Basic Setup >> Output >> Output Limits >> Upper Limit Warning Limits field,
c. In the Basic Setup >> Output >> Output Limits >> Lower Limit Alarm Limits field, enter
d. In the Basic Setup >> Output >> Output Limits >> Lower Limit Warning Limits field,
e. In the Basic Setup >> Output >> Output Limits >> Limit Hysteresis field, enter a percent
2.6.6

LCD display

The LCD display connects directly to the electronics board which maintains direct access to
the signal terminals. A display cover is provided to accommodate the display.
The display always indicates the transmitter output (Pressure, Flow or Level) as well as
abbreviated diagnostic status when applicable. Sensor temperature and pressure are
optional variables that can be configured using LOI or Class 2 Master. When turned on, the
display will alternate between the selected variables.
For LCD display configuration using,
LOI – see

Class 2 Master – see

LCD display configuration using Class 2 Master
In Basic Setup >> Display Variables >> Local Operator Interface (LOI) >> Display Selection, select
the process variables to be shown on the local display.
2.6.7

Security

The Rosemount 2051 has a hierarchy of security features. The security jumper on the
electronics board (or optional LCD display) provides the highest level of security. With the
jumper in the ON position, all writes to the transmitter will be disabled (including writes
from the LOI or a Class 2 Master).
See Figure 4-2 on page 39
2.6.8

LOI security

To prevent unauthorized changes, either set the security jumper to ON and/or set an LOI
password (Refer to
requires a user to enter a non-zero four digit password at the transmitter in order to operate
the LOI.
These parameters can be set using a Class 2 Master.
LOI security configuration using Class 2 Master
1. To turn on the LOI password, enter value in the Basic Setup >> Display Variables >> Local
Operator Interface (LOI) >> Password field.
2. To turn off the LOI password, enter 0 in the Basic Setup >> Display Variables >> Local
Operator Interface (LOI) >> Password field.
14
upper alarm value.
enter upper warning value.
lower alarm value.
enter lower warning value.
of range value.
Table 2-1 and Figure 2-1
LCD display configuration using Class 2 Master
for details on jumper configuration.
"Configure security and simulation" on page
Reference Manual
00809-0300-4101, Rev BB
38). The LOI password
Configuration