FAQs (frequently asked questions)

The system reports "The system manager configuration file 'XXX.wsm' cannot be opened. The file is probably blocked by another system manager instance!"

Problem:

The 'TwinCAT System Manager' is addressed by the 'TwinCAT Simulation Manager' as the 'Out-of-process' COM server. They run as two separate processes (EXE files) that communicate with each other.

This fault message is displayed when a system manager process can no longer be addressed. The system is blocked as a second system manager instance cannot be started on the same configuration file.

Solution:

The blocked system manager process must be exited. To this end, please carry out the following operations:

1. Router cleanup (in some cases this step alone is enough)
   
2. Exit the system manager process.
   
3. If the system manager process does not exit, another router cleanup should be initiated. This should terminate the system manager process!

Error Message:
"The PlcControl symbol file for the project 'XXX' has not been found. The system manager configuration must be corrected before it can be used!"

Problem:

The symbol file (*.tpy) specified in the system manager could not be found!

Solution:

Reconnect the symbol file in the system manager configuration and rescan the symbol ("Rescan").

The newly created simulation PLC project does not contain any inputs or outputs.

Problem:

The following conditions must be fulfilled to create the allocated variables:

• The original PLC projects must contain allocated variables, which can then be exported into the simulation PLC project.
• The simulation PLC symbols must be used in the simulation project
• The simulation PLC project must have been compiled.

Solution:

Please check whether symbols have been created in the simulation PLC and that these can also be used, as the code creator ignores unused symbols during compilation. Calls of program POEs are not created in the simulation PLC, they will possibly have to be retrospectively taken care of. .

Make sure that the used symbol address ranges are big enough. The PLC Control Compiler creates the following error message:

Error: Variable 'X' to large for address %ADDRESS

In this case increase the memory in the project options of the relevant PLC project.

When the simulation PLC project has been compiled without any errors, the symbols in the simulation manager can be updated at the corresponding PLC node with "Re-load".