In certain cases, when a drive is used in an area susceptible to strong electromagnetic noise, the content of its EEPROM memory can be altered.

In order to avoid this issue, the EEPROM memory can be write-protected after downloading the setup table and / or the TML application. This is done in EasySetUp or EasyMotion Studio by selecting Communication | EEPROM write protection | Write protect entire EEPROM after download. Any attempt to write data into a write-protected EEPROM will fail, including any accidental write commands generated by strong electromagnetic noise.

The only exception to this rule is the TML instruction SAVE, which can be used on a write-protected EEPROM in order to save a new setup table. The SAVE instruction will temporarily disable the EEPROM write protection, save the setup data and then re-enable the EEPROM write protection.