General

The TwinCAT system can be started or stopped from a central location. This is usually done manually by the system startup engineer or developer, or from within the program due to external influences such as voltage failure or Windows shutdown. A COM object has been introduced within the TwinCAT system service, in order to enable greater influence of an application software upon the TwinCAT system.

Deployment

TwinCAT can be started or stopped via the TwinCAT system object. By using COM/DCOM, this can also happen via a network. Furthermore, the state (RUN or STOP) can be queried via this COM object, and COM events for signalling a start or stop of the TwinCAT system can also be triggered. Now it is possible, for example, for an application to be informed about a change in state of a remote TwinCAT system.