
UniInt Interface User Manual v
Remote Cache Builds ........................................................................................ 65
Messages .......................................................................................................... 66
Informational ...................................................................................................... 66
Configuration Errors .......................................................................................... 68
Troubleshooting ................................................................................................. 70
Interface Operation ............................................................................................ 70
Deleting Cache Files ......................................................................................... 70
UniInt Failover Scheme ................................................................................................................ 73
Introduction ........................................................................................................ 73
Configuring UniInt Failover ................................................................................ 75
Start-Up Parameters.......................................................................................... 75
Data Source Points ............................................................................................ 76
Historian Tags ................................................................................................... 77
Steady State Operation ..................................................................................... 81
Glossary ............................................................................................................ 82
Active ID Point ................................................................................................... 82
Backup Interface................................................................................................ 82
Cold Failover...................................................................................................... 82
Data Source ....................................................................................................... 82
Failover ID ......................................................................................................... 83
Failover Update Interval..................................................................................... 83
Heartbeat Point .................................................................................................. 83
Hot Failover ....................................................................................................... 83
Input Data .......................................................................................................... 84
Interface Control Points ..................................................................................... 84
Interface Control Tags ....................................................................................... 84
Interface Copy ................................................................................................... 84
Interface Instance .............................................................................................. 84
Output Data ....................................................................................................... 84
Primary Interface ............................................................................................... 85
Point 85
Thrashing ........................................................................................................... 85
Warm Failover ................................................................................................... 85
Failover Scenarios ............................................................................................. 85
Primary Interface Shutdown .............................................................................. 85
Primary Interface Stops Updating Heartbeat Point ............................................ 88
Manual Failover ................................................................................................. 90
Primary Interface Loses Connection to Historian Server................................... 92
Primary Stops Updating Heartbeat Point for less than 5 Intervals .................... 94
Interfaces Connect to Data Source at Approximately the Same Time .............. 96
Maximum Data Overlap ..................................................................................... 97
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