RSView Supervisory Edition Installation Guide

• • • • •RSVIEW SUPERVISORY EDITION USER’S GUIDEStarting the HMI server when the first client connects to itYou can set up the HMI server to load on demand. This means that the HMI server isloaded when the first client accesses the HMI server project, and is unloaded when the lastclient is closed.HMI servers should start on demand only when a system is under development. In therun-time environment, the HMI server should start when the operating system starts, toensure that no alarms or logged data is missed. An unlicensed HMI server can only bestarted on demand.Starting the HMI server when the operating system initializesYou can set an HMI server to load when Windows starts. This option is required, if youwant to set up redundancy for the HMI server.This option also is for normal use at run time, as it allows clients to connect quickly, andensures that the HMI server can be returned to normal operation automatically, if thecomputer on which it is running is restarted. Because the HMI server runs as a service,users do not have to log into Windows to make the HMI server run.If you are setting up redundancy for an HMI server, you can run components when theserver starts up, or you can specify macros to start the components only when the server isthe active server. For information about macros, see Chapter 22, Creating macros.An HMI server set to load when Windows starts, can be unloaded by changing the Startuptype to On demand, and then closing all clients, or by using the RSView SE ServiceManager.After changing an HMI server’s startup type, you must restart the server’s computer for thechange to take effect.Setting up HMI server redundancyTo minimize disruptions to clients if the primary HMI server fails, set up a redundantHMI server. In RSView, the redundant server is called the secondary server. When theprimary HMI server becomes available again, the system automatically switches back tothe primary from the secondary server.The settings you specify on the Redundancy tab are saved with the application, and are thesame for both primary and secondary HMI servers. You do not need to specify differentsettings for the computers that are hosting the primary and secondary servers.5-14