Yaskawa F7 Modbus - Manual (Page 63)

F7U Parameters 4-24
ENTER/ACCEPT Command (Write Only)
Caution
Data sent to the F7 drive serially, is sent to the F7 drive’s RAM and may be lost when the F7 drive looses power. In order for this data to be
retained upon power loss, it must be first transferred to non-volatile memory. The ENTER command transfers the current RAM parameter
data to non-volatile memory. Caution should be exercised when using the ENTER command as the maximum number of non-volatile
memory writes cannot exceed 100,000. Excessive use of the ENTER command will cause the F7 drive to fail. Entering data through the
digital operator transfers the data to non-volatile memory without the use of the ENTER command. Data that cannot be changed while the
F7 drive is in RUN mode, is stored in a temporary location. The ACCEPT command is used to move that data from temporary storage to
active RAM. There is not restriction on the use of the ACCEPT command.
Table 4.17 - ENTER Command
Addr Function Data Description
910 ACCEPT 0 Transfer data to active RAM
900 ENTER 0 Transfers the current parameter data to non-volatile storage