UniInt End User

Disconnected Startup Requirements 51

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UniInt Interface User Manual
PI BASemAPI

Disconnected Startup Requirements 51
Operating Systems 51
Interface 52
Buffering 52
Point Synchronization and PI Server Connections 53
Point Modifications on the PI Server and Interface Restarts 53
Limitations 54
Extended Attribute Lengths 54
UNIX and Linux 54
Interfaces Using the PI SDK 55
Outputs 55
Startup Command File Configuration 56
Sample Interface Startup Files 57
PI ICU Configuration 57
Disconnected Startup Architecture 61
Operation 62
Creation 63
Validation 64
Construction 64
Utilization 65
Synchronization 66
Remote Cache Builds 67
Messages 68
Informational 68
Configuration Errors 71
Other Errors 72
Troubleshooting 72
Interface Operation 72
Deleting Cache Files 73
Introduction 75
Configuring UniInt Failover 77
Start-Up Parameters 77
Data Source Points 78
PI Tags 79
Steady State Operation 82
Glossary 84
Active ID Point 84
Backup Interface 84
Cold Failover 84
Data Source 84
Failover ID 84
Failover Update Interval 84
Heartbeat Point 85
Hot Failover 85
Input Data 85
Interface Control Points 85
Interface Control Tags 85
Interface Copy 86
Interface Instance 86
Output Data 86
Primary Interface 86
Point 86
Thrashing 86
Warm Failover 87
Failover Scenarios 87
Primary Interface Shutdown 87
Primary Interface Stops Updating Heartbeat Point 89
Manual Failover 91
Primary Interface Loses Connection to PI Server 93
Primary Stops Updating Heartbeat Point for less than 5 Intervals 95
Interfaces Connect to Data Source at Approximately the Same Time 97
Maximum Data Overlap 98
Message Logs 101

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