YASKAWA MP920 User Manual page 37

Transferring Data Using MEMOBUS Mode
The Extended MEMOBUS protocol is used for communications between MP-series and CP-
series products (MP920, CP-316, CP-317, CP-9200SH, and CP-3500H).
The Master transmits Extended MEMOBUS format instructions to the Slave, and the Slave
returns a response message when it has received an instruction.
MP-Series Controller
CPU
MSG-SND MSG-RCV
215IF/
218IF
Extended MEMOBUS format
Fig. 3.1 Extended MEMOBUS Protocol Message Flow
Between MP-Series Controllers
MP-Series Controller
MSG-SND
3-5
3.2 Protocol Functions
CPU
MSG-RCV
215IF/
218IF
3