3.2 Protocol Functions
3-5
3
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.
Fig. 3.1 Extended MEMOBUS Protocol Message Flow
Between MP-Series Controllers
CPU
MSG-SND
215IF/
218IF
CPU
MSG-SND
215IF/
218IF
MSG-RCV
MSG-RCV
MP-Series Controller
Extended MEMOBUS format
MP-Series Controller
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