PLC Programming

DDE communcation with the GatewayDDE Server...
=CODESYS|'C:\CODESYS\PROJECT\IFMBSP.PRO'!PLC_PRG.TEST'
When you click on 'Edit' then "Links", the result for this link will be:
Type: CODESYS
Source file: C:\CODESYS\PROJECT\IFMBSP.PRO
Element: PLC_PRG.TEST
Accessing variables with Intouch
Link with your project a DDE Access Name with the application name CODESYS and
the DDE topic name C:\CODESYS\PROJECT\IFMBSP.PRO.
Now you can associate DDE type variables with the access name . Enter the name of
the variable as the Item Name (e.g., PLC_PRG.TEST).
9.2 DDE communcation with the GatewayDDE Server...
Handling of the GatewayDDE Server
The GatewayDDE Server can use the symbols which are created in CoDeSys for a project to
communciate with other clients or the PLC. (see 'Project' 'Options' 'Symbolconfiguration'). It can serve
the DDE interfaces of applications like e.g. Excel. This allows to transmit the variables values of the
PLC to an applications, e.g. for the purpose of monitoring.
At start of the GatewayDDE Server a window opens, where the configuration of start and
communication parameters can be done. A already existing configuration file can be called or the
parameters can be set newly.
Starting dialog of the GatewayDDE Server
Using the command 'File' 'Open' you can call an already existing file which stores a set of
configuration parameters. The standard dialog for selecting a file will open and available files with the
extension ".cfg" will be offered. If a configuration file is selected, the configuration parameters and the
defined target device are displayed
If the option 'File' 'Autoload' is activated, the GatewayDDE Server automatically opens with that
configuration, which was active before the last terminating of the server.
If the server is started without any predefined configuration and without the setting Autoload, then in
the configuration window 'Gateway:' und 'Device:' are displayed. Then you have to set up a new
configuration.
The command 'File' 'Settings' opens the dialog 'Server settings', in which the following parameters
can be set:
9-2 CoDeSys V2.3