Clearing Factory Lockdown; Restricted Register Write Operations - Nuvation Energy NUV300-BC-12 Product Manual

7. Write 1 to pi_factory_persist.save
8. Wait until pi_factory_persist.save is equal to 0
9. Verify pi_factory_lockdown.actual_state is equal to 1

7.2.3. Clearing Factory Lockdown

A system can only exit Factory Lockdown through a firmware upgrade or a factory reset.
For performing a factory reset, refer to

7.2.4. Restricted Register Write Operations

When Factory Lockdown has been enabled, there are a set of components in the battery management
system to which cannot be written from external interfaces (e.g. Modbus-TCP, Modbus-RTU, and CAN
bus). There are some exceptions to this write-exclusion which will be discussed in the note later in
this section. An alphabetical list of all components affected by this write protection are as follows:
cell
ci
pi_factory_verify_fresh
pi_fault_config_factory_verify
pi_fault_factory_verify_wdt
sc_ci_fresh
sc_ci_summary
sc_clock
sc_clock_connected
sc_factory_lockdown
sc_factory_persist
sc_factory_verify_fresh
sc_fault_ci
sc_fault_clocks
sc_fault_config_factory
sc_fault_config_factory_verify
sc_fault_factory_verify_wdt
sc_fault_linkbus_power
sc_fault_linkbus_wdt
sc_fault_ram_test_wdt
sc_fault_rom_test_wdt
sc_gpo_fault_pilot
sc_linkbus
sc_ram_test_wdt
sc_rom_test_wdt
stack_cell_balancer
stack_cell_fresh
Document ID: NE-PM-002
Nuvation Energy Low-Voltage BMS - Product Manual
Appendix D.
88 Rev 1.2, 2021-03-03
Curie Update 1