6 F 3 B 0 3 6 2

e.UDP open processing example

Ladder program flowchart

UDP open processing start

Socket status read/verify

Are bits C and D both 0?

No

(Closed state?)

 

Yes

 

Execute a UDP open request

(CMD = 0031H).

Hold the input of function block in the on state until the SEND instruction completes.

Instruction completion

Error result

The specified socket is already open.

Verify the status

Normal complete?

Yes

No

An error occurred in the open processing and the specified socket could not be opened.

Handle the error according to the completion and socket status.

Terminate UDP open processing

86

Page 87
Image 87
Toshiba T2N instruction manual UDP open processing example Ladder program flowchart, Error result