Figure 9: Send Function From The Virtual Communication Ports - Siemens 7 Developer's Manual

Multiplexer Driver Developer's Guide
7.4 Data Transfer
Function SerMuxSend() only sends UIH-Frames (unnumbered
information) which come in from WriteRequest to the virtual serial
communication port.
Mux_Drv_DevGuide_v07
Confidential / Released
Send function from the virtual Communication Ports
(the SerPort Object)
Start
WrGetWriteBuffer
no
GetBuffer?
yes
asked all Port two
yes
times and no Frames
sent?
no
GetFrameBufferPort
no
Frame ?
yes
WrSubmitWriteBuffer

Figure 9: Send function from the virtual communication ports

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no
Get
WriteBuffer?
yes
WrReturnWriteBuffer
ret
s
2006-9-27