FB_ReceiveVisionData - GetVisionString (Method)
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Type: |
Method |
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Available as of: |
V1.5.0.0 |
This chapter provides information on:
oTask
Retrieve the vision string.
With the method GetVisionString, the received vision string can be read.
In case the string is longer than 80 bytes, the method must be called several times and you must save the part(s) of the string. If the end of the string is reached, q_xEndOfString is set to TRUE.
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Output |
Data type |
Description |
|---|---|---|
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q_xEndOfString |
BOOL |
TRUE: The entire vision string was read or the vision string is empty. FALSE: The vision string is longer than STRING[80]. The method must be called again to read the entire vision string. |
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q_etDiag |
General library-independent statement on the diagnostic. A value unequal to GD.ET_Diag.Ok corresponds to a diagnostic message. |
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q_etDiagExt |
POU-specific output on the diagnostic. q_etDiag = ET_Diag.Ok -> Status message q_etDiag <> ET_Diag.Ok -> Diagnostic message |
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q_sMsg |
STRING[80] |
Event-triggered message that gives more detailed information on the diagnostic state. |
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Data type |
Description |
|---|---|
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STRING[80] |
Received vision string. |
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q_etDiag |
q_etDiagExt |
Enumeration value of q_etDiagExt |
Description |
|---|---|---|---|
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Ok |
0 |
Ok |
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71 |
The vision string is empty. |
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Enumeration name: |
EmptyString |
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Enumeration value: |
71 |
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Description: |
The vision string is empty. |
Status message: The vision string is empty.
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Enumeration name: |
Ok |
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Enumeration value: |
0 |
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Description: |
Ok |
Status message: Reading the vision string was successful.
