Pentax DSI-200 Series User Manual page 151

Parameter initialization
This function is required when you need to perform parameter
initialization on the drive by using host computer.
If PP-00 (User password) is set to a non-zero value, pass password
verification first. Host computer performs parameter initialization
within 30s after password verification is successful.
Communication
communication is 1F00H. Directly write correct user password to
this address to perform password verification.
Communication address of parameter initialization by means of
communication is 1F01H, defined in the following table.
Communication Address of
Parameter
Initialization
1F01H
address of password
1: Restore default settings
2: Clear records
4: Restore user backup parameters
501: Back up current user parameters
151
verification
Command Definition
via