Figure 7-64 Operating Status
7.6 DIP Switches
The DIP switches are located at the back of the MDU.
Figure 7-65 DIP switches
The following lists the functions of the DIP switches: DIP2 to DIP4: Work together
with 
specied buttons to clear historical records and logs and restore factory
settings.
To clear historical records and logs, you must log in as the admin user.
Table 7-4 Functions of the DIP switches
Function
Status DIP2 DIP3 DIP4 Button
Operation
Action
Clear
historical
alarms.
ON OFF OFF Press and
hold
Active
Alarm for
about 10s.
Clear
historical
alarms.
PDU8000 Modular Precision PDC V2.0
User Manual 7 MDU Commissioning Guide
Issue 04 (2021-04-13) Copyright © Huawei Technologies Co., Ltd. 111