You can create EPICS Client I/O servers to monitor process variables that an EPICS server, or Input/Output Controller (IOC), publishes using the Channel Access network protocol, and to read process variables from and write process variables directly to an IOC using network-published shared variables.
Note Before you can use the EPICS Client I/O server, you first must configure an IOC 3.14 or later server. The configurations of the EPICS Client I/O server and the IOC must match. You can configure the EPICS Client I/O server even when the IOC is not running.The EPICS: Input / Output Controller Application Developer's Guide provides information about configuring an IOC. Refer to the Argonne National Laboratory web site at www.aps.anl.gov/epics to download this guide as well as the latest version of EPICS.

You can create EPICS Client I/O Servers either interactively or programmatically.