opc.daSupport

(To be removed) OPC data access troubleshooting utility

Support for the OPC Data Access (DA) standard will be removed in a future release. Instead use OPC Unified Architecture (UA). See Compatibility Considerations.

Syntax

opc.daSupport('localhost')

opc.daSupport('HostName')

opc.daSupport('HostName','FileName')

opc.daSupport('HostName',Fid)

outFile = opc.daSupport(___)

Description

opc.daSupport('localhost') returns diagnostic information for all OPC data access servers installed on the local machine, and saves the output text to the file opcsupport.txt in the current folder. Then the file opens in the editor for viewing.

opc.daSupport('HostName') returns diagnostic information for the OPC servers installed on the host with name HostName, and saves the output text to the file opcsupport.txt in the current folder. Then the file opens in the editor for viewing.

opc.daSupport('HostName','FileName') returns diagnostic information for the host with the name HostName, and saves the output text to the file FileName in the current folder. Then the file opens in the editor for viewing.

opc.daSupport('HostName',Fid) appends its output information to the file already opened with fopen. The Fid argument must be a valid file identifier.

outFile = opc.daSupport(___) returns the full path to the generated file and does not open the file in the editor for viewing.

Examples

Get Diagnostics for All Servers on the Local Machine

opc.daSupport('localhost')

Get Diagnostics for All Servers on Specified Machine

opc.daSupport('area1')

Save Diagnostic Information to Specified File

opc.daSupport('area1','myfile.txt')

Input Arguments

'HostName' — Machine hosting OPC server

'localhost' | other character vector or string

Machine hosting OPC servers, specified as a character vector or string.

Data Types: char | string

'FileName' — File name for output text

'opcsupport.txt' (default)

File name for output text, specified as a character vector or string.

Data Types: char | string

Fid — File identifier for open output file

file identifier for the open output file, set by the MATLAB fopen function

Example: Fid = fopen('MyOPCSupport.txt')

Output Arguments

outFile — Path to file of results

character vector

Path to file of results, returned as a character vector.

Version History

Introduced in R2013a

R2024a: Warns

Support for the OPC Data Access (DA) standard will be removed in a future release. This function issues a warning that it will be removed.

To access live OPC data, use the OPC Unified Architecture (UA) standard instead. See Unified Architecture.

R2023b: To Be Removed

Support for the OPC Data Access (DA) standard will be removed in a future release. This function runs without warning.