PLC cannot be addressed. The runtime system is slow to respond or does not respond at all.
This article gives you some clues to solve problems that might occur when loading the application resp. when addressing a →PLC. The problems are related to the built-in PLC as well as other PLCs. Both types of PLCs are using the →runtime system .
Problem |
Solution |
The button (Build and Load Application) in the Instance view is not available. |
No matter which PLC you are using: More steps, if you are using the built-in PLC:
More steps, if you are using Linux (64-bit) as operating system:
More steps, if you are using another PLC:
If each step of the solution has been done but the button is still not available, see "Disabled button "Load Application"" for problems/solutions not related to
the runtime system
. |
All of a sudden, some buttons in the Instance view, such as , , and , are not available any longer, after loading the application . Moreover, the runtime system reacts sluggishly or not at all. |
The most common cause for the problem are code parts in the loaded application and the runtime system is exceedingly busy with its execution (e.g. infinite loops) or code parts that are preventing the runtime system from the cyclic execution of the application (e.g. blocking system calls). Proceed as follows so that loading/starting/stopping of the application onto the built-in PLC is possible again:
Proceed as follows so that loading/starting/stopping of the application onto another PLC is possible again:
|
License expired is displayed under Execution state in the Instance view . |
You require a license for the runtime system . See "Requesting and installing license". |
Command Stop Built-In PLC or Start Built-In PLC in menu PLC is not enabled. |
There are 2 procedures – depending on the basic cause.
Result of both procedures: The built-in PLC is automatically started, the command to stop/start the built-in PLC is enabled again. |
The connection to Raspberry Pi has been interrupted: Values for variables are not displayed any longer. |
See "No connection to Raspberry Pi from the development environment". |
More useful information:
logi.cals recommends to install and use the most current versions of logi.CAD 3 and the runtime system so that the latest features and problem fixes according to the release notes are provided in the used version.
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