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kchWebServer

The library kchWebServer provides a simple HTTP server for an external HTML Visu. 

Data exchange is supported for files and CODESYS variables.

Syntax

  kchWebServer.png

C++
PROGRAM KchWebServer
VAR_INPUT
    wPort: WORD := 8100;
    sUser : STRING;
    sPassword : STRING;
    xEnable : BOOL := TRUE;
END_VAR


Parameters

Parameter: 

Beschreibung: 

wPort 

HTTP Port 

sUser 

User Name for HTTP Authentication 

sPassword 

Password for HTTP authentication 

xEnable 

Switching the service on/off 


Example

C++
KchWebServer(wPort := 8100, xEnable := TRUE, sUser := 'user', sPassword := 'pass');


Requirements


Remarks

  • CODESYS variables are released with the symbol configuration for the kchWebServer.

  • Global settings (GVL_KCHWEBSERVER):sDefaultFile: File used if none is specified in the URL (Default: index.html)sUploadDir: server directory (Default: CODESYS Visu directory)iDebugLevel: Debug level in the CODESYS Log (Default: LOG_TYPE.ERROR)

  • Supported HTTP calls:<ip>:<port>/vars, Listing of all symbol variables as XML content<ip>:<port>/cmd, Shell command, StdOut back as Text Content<ip>:<port>/readvar:<symbolvariable>, Returns variable value as text content<ip>:<port>/readvarlist:<var1;var2;>, Returns variable values as a list<ip>:<port>/writevar:<symbolvariable>=<value>, Writes new variable value, no content as return value.Files GET

  • the documentation and a example are on the ftp server.