Connecting to PLC or disconnecting from PLC
Condition so that you are able to connect to a PLC or to disconnect from it: You have configured the PLC within the PLC-object.
How to establish the connection to the →PLC or to terminate the connection to it:
In the Instance view: Select the requested PLC (= appertaining IEC-resource with icon
) or one of the children.
Result: Above the toolbar for the view, the selected PLC incl. the project name is displayed.Click the corresponding button. Only one of them is provided at the same time (depending on the current connection state).
Button
Meaning
Connect to PLC
Disconnect from PLC
Result, if the action has been successful: Above the toolbar for the view, the icon for the connection state is updated.
In logi.CAD 3 you have to connect to a PLC, before you are able to e.g. load the application onto the PLC.
Subsequently, it is possible to access the same PLC from different computers (one after another). Here a possible usage scenario: On computer A, you create an application and load it to a PLC and then you click 
. On computer B, a colleague imports the project and clicks 
in order to test the application.