ICP DAS USA PDS-220F Series User Manual page 17

Programmable Serial-to-Fiber Device Server
 Flash Lock Switch
In factory default settings, the "Flash Lock" function is disabled. User can modify the program by
yourself or update the firmware. But if need to avoid writing or erasing any file in the flash, user
have to enable the "Flash Lock" function in the PDS-220Fx Series. Please switch the position to
"Flash LOCK" and then the PDS-220Fx Series can restrict any write to flash memory.
Factory Default is Non-Lock Flash Lock
PDS-220Fx Series User Manual Version 1.3, Oct. 2018 - 17 -