At a Glance
Connection enables you to change from offline to online mode. On connection, data in the PLC and the terminal is compared:
if the information is identical, the online mode is Equal,
if the information is different, the online mode is Different,
By disconnecting, you can return to offline mode from an online mode.
Equal online mode
On connection to the PLC, Control Expert runs in Equal online mode when executable files and the Upload information are identical in the PLC and in the terminal.
You can modify the project in the same way as for offline mode. Generating the executable also automatically triggers loading of modifications to the PLC.
If the project program has been modified in the terminal without regenerating the executable, only the non-modified parts of the project will be animated.
To animate the entire project once again, you must generate the executable and update the PLC.
Different online mode
On connection to the PLC, Control Expert runs in Different online mode when executable files and the Upload information are different in the PLC and in the terminal.
To run in Equal online mode, you must transfer the project between the terminal and the PLC.
In Different online mode, the animation level is limited to access to located variables via their topological address. Modification of the program is not authorized.
Connection procedure
You must execute the following actions to connect up:
Step |
Action |
|---|---|
1 |
On first connection: Click . |
2 |
Choose the connection mode:
|
3 |
Click . |
Disconnection procedure
You must execute the following actions to disconnect:
Step |
Action |
|---|---|
1 |
Click . |
Automatic disconnection
In order to avoid online mode switching automatically to offline mode, without your explicit request (which is possible if the process executed by the processor is too large), you are recommended to increase the Timeout communication parameter.