FB_ReceiveVisionDataServer - GetHeader (Method)

Overview

Type:	Method
Available as of:	V1.7.3.0

This chapter provides information on:

Retrieve the header data of the vision protocol.

With the method GetHeader, the header data of the vision protocol can be read.

Output	Data type	Description
q_etDiag	GD.ET_Diag	General library-independent statement on the diagnostic. A value unequal to GD.ET_Diag.Ok corresponds to a diagnostic message.
q_etDiagExt	ET_DiagExt	POU-specific output on the diagnostic. q_etDiag = ET_Diag.Ok -> Status message q_etDiag <> ET_Diag.Ok -> Diagnostic message
q_sMsg	STRING[80]	Event-triggered message that gives more detailed information on the diagnostic state.

Output

Data type

Description

q_etDiag

General library-independent statement on the diagnostic. A value unequal to GD.ET_Diag.Ok corresponds to a diagnostic message.

q_etDiagExt

ET_DiagExt

POU-specific output on the diagnostic.

q_etDiag = ET_Diag.Ok -> Status message

q_etDiag <> ET_Diag.Ok -> Diagnostic message

q_sMsg

STRING[80]

Event-triggered message that gives more detailed information on the diagnostic state.

Data type	Description
ST_VisionDataHeader	Header data of the protocol.

q_etDiag	q_etDiagExt	Enumeration value of q_etDiagExt	Description
Ok	Ok	0	Ok
ExecutionAborted	NoDataAvailable	14	No data available.

Issue	Cause	Solution
No data available.	There are no valid header data available.	Ensure that vision data is available by verifying xVisionDataReceived before calling the method.

Status message: Reading the header data of the vision protocol was successful.