By default, ADDE commands timeout if they do not receive any data from the server for a period of 120 seconds. You can change the timeout period with the environment variable ADDETIMEOUT. To do so, enter the following Unix command (substitute the equivalent if using C shell), where numseconds is the number of seconds.
The environment variable will be set each time you log on to your account if you have setup your enviornment definition file (e.g., .cshrc for C-like shells, .profile for SH-like shells, and .bash_profile for BASH) to source the appropriate user (user or 'mcidas') definition file included in Unidata McIDAS: ~mcidas/admin/user_env.(sh|csh) for the users other than 'mcidas' and ~mcidas/admin/mcidas_env.(sh|csh) for the user 'mcidas'.