Omron 3G8F7-CRM21, User Manual

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Explicit Messaging Section 4-3
4-3-2 Explicit Messaging by Windows Messages
This is the procedure by which to use the Windows messages, execute
explicit messaging and confirm the response.
YES
NO
Notify the Explicit
response
An Explicit message request?
Loop Start
(Open Board)
CPNT_Open
End processing
Loop End
(Stop Communications cycles)
CPNT_StopCycle
(Close Board)
CPNT_Close
Initial processing
(Start Communications cycles)
CPNT_StartCycle
I/O process and so on
(Register Notice of Explicit Response Message
Received)
CPNT_RegReceiveExplicitNotifyMessage
(Send Explicit Message)
CPNT_SendExplicit
(Unregister Notice of Explicit Response Message
Received)
CPNT_UnRegReceiveExplicitNotifyMessage
Windows
message process
(Get Explicit Response Message)
CPNT_ReceiveExplicit