Transcript of "InduSoft System Redundancy Webinar 2011"
Web Thin Clients Secure HMI/SCADA ViewerThin Clients Availability Tags Reliability History Databases Controllers (Alarm, Event, (e.g.: PLCs) Trend)
Web Thin Client Project > Web > Thin Client > Advanced: (Internet Explorer)Primary Secondary Server Server Web Thin Clients switch automatically from the Primary Server to the Secondary Server (and vice-versa) when the current connection fails.
Secure Viewer Configuration > Advanced: Secure Viewer Thin ClientPrimary Secondary Server Server Secure Viewer Thin Clients switch automatically from the Primary Server to the Secondary Server (and vice-versa) when the current connection fails
Redundant: In this mode, IWS saves data in InduSoft Web Studioboth Primary and Secondary Databases. If EmbeddedViewone of these databases is unavailable, IWS CEViewkeeps saving data only in the database thatis available. When the database that wasunavailable becomes available again, IWSsynchronizes both databases automatically.Store and Forward: In this mode, IWS savesdata in the Primary Database only. If thePrimary Database becomes unavailable, IWSsaves the data in the Secondary Database.When the Primary Database becomesavailable again, IWS moves the data fromthe Secondary Database into the Primary Primary SecondaryDatabase. Database Database
Tag between curly braces in the Station InduSoft Web Studio field of the driver worksheet(s): MAIN DRIVER SHEET: STANDARD DRIVER SHEET: Primary SecondaryController Controller Just by changing the value of the tag configured in the Station field, you can switch from the Primary Controller to the Secondary Controller when the primary one is no longer available (and vice-versa)
Communication Status OK?Y N Status not OK for more than “X” seconds? N Y Trying the same controller (PLC) for more than “X” seconds? N Y Switch to the other PLC
Station: Primary or Secondary Mode: Hot or Stand-by Status: Live, Off, or UnknownCondition to be Hot: Condition to be Stand-By:-Remote Station Off -Remote Station Unknown- Remote Station On and Stand-By - Remote Station On and Hot