The simulator can act as a Code Set Consumer and receive messages from a distant system that implements the Code Set Master actor.
Don't forget to refresh this messages list after to have send your message to the Simulator. To do that, only hit the "Refresh List" buttom.
You can display the codes send in each HL7 messages. To do that, just hit the buton in the action column. A new window will appear to display all codes contained in the selected HL7 message and send by the CSM actor.
The CSC Simulator is a responder and is able to respond to your CSM SUT with the appropriate Acknowledgment message. If the CSM message send to the CSC Simulator is not consistent with the IHE technical framework, the CSC will respond with an error Acknowledgment.
For further details about this functionnality of the LCSD Simulator, go to the HL7 messages validation page.