In UMC, click File Access Protocols > NCP.
Click the Search icon and specify the server name.
or
Click Browse, select Server Type to list their associated servers. Select the required servers from the list, and then click APPLY.
Click NCP > Connections.
Select the NCP connection, click More Options icon, and then select Send message.
Specify the message and click Send.
The Character limit of message is 256.
This delivers the specified message to the selected NCP connection and can also be performed on multiple connections at a time.