Teach pendant unexpectedly disconnected.

Cause:

1. Close the HMI and restart it.
2. The network between the teach pendant and controller disconnects for 1min and then reconnects.

Troubleshooting:

For cause 1, check whether HMI was exited and then restarted.
For cause 2, check whether the log file contains records of network disconnection.

Solution:

For cause 1, clear the error and continue normal use.
For cause 2, check the network cable connection and cable quality.

Case sharing:

None.