To save all current position table  items to ROM area 
int FAS_PosTableWriteROM( 
BYTE nPortNo, 
BYTE iSlaveNo 
); 
nPortNo
 
Port number of relevant drive. 
iSlaveNo 
Slave number of relevant  drive.
 
FMM_OK : Command has been successfully performed. 
FMM_NOT_OPEN : The drive has not been connected yet . 
FMM_INVALID_PORT_NUM : There is no nPort in the connected ports . 
FMM_INVALID_SLAVE_NUM : There is no drive of iSlaveNo in the relevant port . 
FMC_POSTABLE_ERROR : An error occurs while p osition table is being saved. 
Position table data is saved to RAM / ROM area.  This function  activates to save data 
to ROM area.  Even though power is off, data is preserved.