Ensure that the HACloud session server is running before you can use the HACloud TN3270 emulator.
To open the HACloud emulator:
This shows the Available Sessions dialog box. If any of the servers has a TN3270 listener defined, these appear in the list of available sessions in the following format: 3270 ServerName@HostIP:PortNumber.
If this dialog box is not visible, click OPEN SESSION to start it.
This starts the HACloud TN3270 emulator and loads in it the application running in the region.