Change the logon expiry time using the LogonExpiry() parameter. If the user exceeds the Suspended Session Time Limit, the logon is cancelled because leaving logon credentials visible may comprise a security risk. (Times are in seconds. If you do not specify LogonExpiry it defaults to 30 seconds. Use LogonExpiry(0) for an unlimited time.)
Control the session timeout using the Sessiontimeout() parameter using the valid values in Server Module - StartSession Method.