OSI/MHS Management Programming Manual
Communicating with the OSI/MHS Processes
OSI/MHS Management Programming Manual—424824-001
2-4
Running an EMS Consumer Distributor
management application. You need to open the consumer distributor for SPI 
communication, and then specify the source of event messages with a CONTROL 
command. The EMS Manual provides full details.
To avoid receiving all event messages from all subsystems (something you will rarely 
want to do), you must install a filter to select only those messages your application 
intends to act upon.  You install your filter when you start the consumer distributor.  
Filters are written in the EMS filter language, which is described in the EMS Manual.
Appendix C, Examples
, provides an example of a filter that you could use for events 
generated by OSI/MHS and related subsystems. This appendix also provides a sample 
program that starts an EMS consumer distributor and performs the other steps discussed 
above.










