CONTROL
- Introduction to CTRL
- CONTROL Classes
- Types of Control Functions
- Control graphics
- CONTROL Functions
  - Funtions A
  - Funtions B
  - Funtions C
  - Funtions D
  - Functions E
  - Functions F
  - Functions G
  - Functions H
  - Functions I
  - Functions J
  - Functions K
  - Functions L
  - Functions M
  - Functions N
  - Functions O
    - onBoard()
      The method checks whether an asset is valid (onboarding). The method connects to MindSphere.
    - OPCEnumQuery()
      Function for browsing registered OPC servers. This function is used for the simple OPC client configuration.
    - openAES()
      Opens the alert and event panel at the desired position and allows executing an action such as print the upper table of the alert and event panel or save the table.
    - openDialog()
      Opens a dialog for simple configuration.
    - openLogViewer()
      Opens the Log Viewer.
    - openProgressBar()
      Displays a module with the defined parameters for a progress bar.
    - openTrend()
      Opens a predefined trend group.
    - openTrendCurves()
      Opens a trend with a configuration trendName and replaces the curves that contain a dollar parameter.
    - openUrl()
      The function openUrl is used to open files located at arbitrary URLs in external applications.
  - Functions P
  - Functions Q
  - Functions R
  - Functions S
  - Functions T
  - Functions U
  - Functions V
  - Functions W
  - Functions X
  - Functions Y
  - Functions Z
- CTRL Debugger
  With the CTRL Debugger you can debug the programming language Control.
- CtrlExtension, basics
- CTRLPPCheck
  Save time and money with increased code quality in your projects

OPCEnumQuery()

Function for browsing registered OPC servers. This function is used for the simple OPC client configuration.

Synopsis

int OPCEnumQuery(int type, dyn_string in, dyn_string &out);

Parameters


Parameter	Description
type	1 = Search for OPC servers. 2 = Search for OPCA&E-Servers.
in	The host name. For searching registered OPC servers. Specifying an empty string "" will search the own host.
out	List of found servers

Return value

If the operation has been successful, the function returns 1 otherwise, an error occurred.

Error

Description

This function searches for registered OPC servers on a specified host name. The simple OPC client configuration uses this function. For the search you can only specify one host name.

Example

The following example returns a list of installed OPC servers on the host "eiwnt160".

main()
{
  int t = 2;
  int retVal;
  dyn_string i = " eiwnt160 ";
  dyn_string o;
  retVal = OPCEnumQuery(t,i,o);
  DebugN("Return value: ",retVal,"Type: ",t,"In; ",i,"OPC A&E
  servers: ",o);
}

Assignment

Miscellaneous functions

Availability

CTRL