Yaskawa APOGEE FLN P1 - Manual (Page 45)

The mailbox will write the value to the drive when this point is written. An ENTER or
ACCEPT command does not need to be sent for the data to be taken by the drive. The behavior
of the write is the same as with the digital operator. There are a limited number of drive
parameters that can be written if the drive is running.
Example: Writing a value of 387 (183H) to Point #72 specifies drive parameter b1-04. Writing
a value of 1 to Point #73 enables the drive for reverse run.
10 APOGEE FLN P1 Communications
YASKAWA TOEP YAICOM 13 Metasys N2 & Apogee FLN P1 SI-J3 Installation & Technical Manual 45