The MLLP Send Component allows you to send an MLLP message. MLLP stands for Minimal Low Level Protocol, and provides a simple binary TCP protocol for exchanging data. MLLP is most commonly used with HL7 data.
To configure this component, simply drag an instance onto the SQL Server Integration Services control-flow surface, link any predecessor task and double-click to set the properties. The following interface is presented :

You have to select a variable containing the message to send, and whether you expect to receive a response. If you expect a HL7 receipt the component can automatically wait for and validate this, or alternatively you can store the response message in a variable.
Message variables should be of type string or object - where string variables are used then the Encoding property available in the Properties window is used to convert to and from binary.
The connection is configured via the MLLP Connection form :

You simply need to enter the host name or IP address, and the port, along with a
name for this connection.