Rosemount 752, Справочное руководство, Страница: 12 / 60

Reference Manual
00809-0100-4377, Rev BA
September 2010
Rosemount 752
2-2
INSTALLATION OF THE
ROSEMOUNT 752
Set Switches
Security (Write Protect)
Changes can be prevented to the indicator configuration data with the write
protection PlantWeb housing switches. Security is controlled by the security
(write protect) switch/jumper located on the interface assembly or terminal
block. Position the switch/jumper in the “ON” position to prevent accidental or
deliberate change of configuration data.
If the indicator write protection switch/jumper is in the “ON” position, the
indicator will not accept any “writes” to its memory. Configuration changes
cannot take place when the indicator security is on.
To reposition the switches/jumpers, follow the procedure described
below. (Simulate = fieldbus protocol)
1. Set the loop to manual and remove power.
2. Remove the electronics compartment cover, opposite the field terminal
side on the PlantWeb housing. Do not remove the indicator covers in
explosive atmospheres when the circuit is live.
3. Slide the security and simulate switches into the preferred position by
using a small screwdriver.
Re-install the indicator cover. Indicator covers must be fully engaged to meet
explosion-proof requirements.
Figure 2-1. PlantWeb Housing
Switches
Security
Alarm/Simulate