[[http://www.aps.anl.gov/epics/EpicsDocumentation/ExtensionsManuals/Gateway/Gateway.html|EPICS "gateway"]] is a program that acts as a proxy server for EPICS.  We use it here so that you can view (but not change) EPICS channels from off-site.

= Restarting the gateway =

The gateway runs on Nodus.

The scripts to start and stop the EPICS gateway are in target/epics-gateway.

= Using the gateway =

== Unix ==

On Unix, set the environment variable "EPICS_CA_ADDR_LIST" to the IP address of the proxy server (nodus).  In csh:

{{{setenv EPICS_CA_ADDR_LIST 131.215.115.52}}}

Apparently everything that uses the EPICS channel access library will automatically obey this variable.  Note that
setting this variable does not ''limit'' EPICS access to this server.  For instance, if you're on the CDS network
and you set this environment variable to a bogus IP address, the EPICS programs will still be able to find channels
via the usual means (whatever that is).

== Windows ==

On Windows, getting EPICS to work via the proxy is the same: set the environment variable EPICS_CA_ADDR_LIST to the
IP address of the proxy.  Environment variables are set in a tab of the "System" control panel.

Of course, you probably want to install the EPICS extensions, like MEDM, Striptool, and the command line programs
caget and caput.  These may be downloaded from http://www.aps.anl.gov/epics/distributions/win32 .