Automatic disconnect of operator station from server (On inactivity)

Introduction

In circumstances where the number of IGSS operator licenses are limited, it would be useful to automatically disconnect an operator station that has not been actively controlling the plant. When the operator station has been disconnected, then an operator license is released and can be used on a different operator station.

An example of use would be in a situation where a plant has onsite monitoring during the normal workday with 2 operator licenses in use. At knock-off time, the two operator licenses onsite are no longer manned stations but the plant still has to be monitored, let's say 24-hours a day. These 2 licenses are then "transferred" to 2 offsite operators, who monitor remotely. The transfer is accomplished by disconnecting the onsite licenses/operator stations from the IGSS server so as to allow them to be re-activated offsite.

This feature is an extension of the dead man's button functionality explained in another section of this help file and can only be used after first setting up the dead man's button. (Click here to first read the instructions for setting up the dead man's button.)

After setting up the dead man's button, do the following:

  1. On the IGSS server PC, open the System Configuration module.
  2. In the tree view on the left, select the operator station(s) to set up with the automatic disconnect parameter.
  3. Now go to the tab Startup and in the Disconnect from server box select On inactivity (see below).

 

images\DEF_SystemConf_op_startup_On-inactivity.gif

  1. Go File – Save and Exit.
  2. If the IGSS system is running, it must be shut down and restarted for the above change to take effect.
  3. Now the automatic operator station disconnect function should be active for all the operator stations configured with the On inactivity parameter.