# Asynchronous messages on CONTROL line

|                      |                                                                                                                                                                                                                                                                   |
| -------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **SYSTEM RESTART**   | This is system restart message, that happens after power up, reprogramming or some internal unrecoverable error. Please report the circumstances if this happens at unexpected time.                                                                              |
| **CONNECTED**        | Connection has been established and all characteristics were discovered and TX characteristics are notification enabled. Link is ready for communication.                                                                                                         |
| **LINK LOST**        | At any moment this message is received, connection or attempt to connection or connection in initial phase is aborted and dongle will roll back to initial state. **Note that this message is not received if you close the link manually as example with init.** |
| adv:PSC01xxyyyyy     | Scan report, meaning cube PSC01xxyyyyy is advertising and available for connection                                                                                                                                                                                |
| **ERR: wrong state** | There was an attempt to send data either in SHELL, SCRIPT or MOTION line when the cube was not connected.                                                                                                                                                         |
| \_\_FATAL REPORT …   | This is a critical problem, which can be handled correctly and the system will restart.                                                                                                                                                                           |
