SA XT for web access : System Architect XT : System information for Administrators : Setting session timeout
  
Setting session timeout
If you do not perform any activities, or read new pages in a System Architect XT session, you are logged out of the session after 20 minutes. You can override this setting by adding the sessionState tag to the web.config file, in the System Architect XT application folder, usually:
C:\Program Files\UNICOM Systems\System Architect Suite\SAXT
You must possess the privileges of a Systems Administrator to change the timeout property.
<system.web>
. . .
<sessionState
mode="InProc"
stateConnectionString="tcpip=127.0.0.1:42424"
sqlConnectionString="data source=127.0.0.1; Trusted_Connection=yes"
cookieless="false"
timeout="20"
/>
. . .
</system.web>
Note Put the <SessionState> tag within the opening and closing <system web> tags, as shown above.