Yaskawa AC Drive P1000 Bypass Technical Manual - Manual (Page 351)

F.6 Mailbox Function
u Mailbox Function Points
n Reading a Drive Parameter
Two points are defined for reading any drive parameter:
• #70 Specifies the parameter to be read from
• #71 Reports the value of the parameter specified in Point #70
When this point is read, it retrieves data from the parameter and sends it to the controller.
Example:
Writing a value of 387 (183 hex) to Point #70 specifies drive parameter b1-04. Reading Point #71 returns the current setting
of parameter b1-04 to the controller.
n Writing to a Drive Parameter
Two points are defined for writing to any drive parameter:
• #72 Specifies the parameter to be written to
• #73 Entry location of the value to be written to the parameter specified in Point #72
When this point is written to, it will write the value to the drive. 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. If the drive is running, there
are a limited number of drive parameters that can be written to.
Example:
Writing a value of 387 (183 hex) to Point #72 specifies drive parameter b1-04. Writing a value of 1 to Point #73 enables the
drive for reverse run.
F.6 Mailbox Function
YASKAWA SIEP YAIP1B 01A YASKAWA AC Drive – P1000 Bypass Technical Manual 351
F
Apogee FLN Network Protocol