PLC Programming

General Online Functions...
'Edit' 'Macros'
This menu item leads to a list of all macros, which are defined for the project. (For info on generating
macros see 'Project' 'Options' 'Macros' ). When an executable macro is selected the dialog 'Process
Macro'. The name of the macro and the currently active command line are displayed. The button
Cancel can be used to stop the processing of the macro. In that event the processing of the current
command will be finished anyway. Then an appropriate message is displayed in the message window
and in the log during Online operation: ": Execution interrupted by user".
Macros can be executed offline and online, but in each case only those commandes are executed
which are available in the respective mode.
4.6 General Online Functions...
'Online' 'Login'
The available online commands are assembled under the menu item 'Online'. The execution of some
of the commands depends upon the active editor.
The online commands become available only after logging in.
Thanks to 'Online Change' functionality you have the possibility of making changes to programs on
the running controller. See in this connection 'Online' 'Log-in'.
Symbol:
Shortcut: +
This command combines the programming system with the PLC (or starts the simulation program)
and changes into the online mode.
If the current project has not been compiled since opening or since the last modification, then it is
compiled now (as with 'Project' 'Build'). If errors occur during compilation, then CoDeSys does not
change into Online mode.
If the current project was changed on the controller since the last download, but not closed, and if the
last download information was not deleted with the command 'Project' 'Clear all', then after the
command 'Login' a dialog opens with the question: „The program has been changed. Load changes
(Online Change)". By answering Yes you confirm that, on log-in, the modified portions of the project
are to be loaded onto the controller. No results in a log-in without the changes made since the last
download being loaded onto the controller. Cancel cancels the command. causes the
entire project to be reloaded onto the controller.
Please regard: Online Change is not possible after modifications in the Task or PLC Configuration, after inserting
a library and after performing 'Project' 'Clean all' (see below). Online Change does not cause a reinitialization
of the variables, thus modifications of the initialization values will not be regarded !
Retain variables keep their values when an Online Change is done, they won't do that at a redownload
of the project (see below, 'Online' 'Download').
After a successful login all online functions are available (if the corresponding settings in 'Project'
'Options' category 'Build' have been entered). The current values are monitored for all visible variable
declarations.
Use the 'Online' 'Logout' command to change from online back to offline mode.
If the system reports
Error:
"The selected controller profile does not match that of the target system..."
Check that the target system entered in the target system settings (Resources) matches the
parameters entered in 'Online' 'Communications parameters'.
Error:
„Communication error. Log-out has occurred"
4-52 CoDeSys V2.3