Page History

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• Type
  • The type of History Store with options of In-Memory and Disk-Backed (available in 4.0.17)
  • Data stored in an In-Memory History Store will not be persisted across a module configuration change, module disable/enable, module restart or power loss. 
  • Data stored in a Disk-Backed History Store will persist across a module configuration change, module disable/enable, module restart or power loss.
• Message Capacity - deprecated in 4.0.19
  • The maximum number of messages to store before dropping the oldest historical messages
• History Max Size
  • The maximum number of megabytes history can use before dropping the data
  • In_Memory Store & Forward will use the Ignition Java Heap memory
  • Default is 500
• History Max Age
  
  • Maximum number of minutes to store history before dropping the data.
  • Default 44640 (31 days)
• Flush Period
  • The period to wait in milliseconds between publishes when flushing messages upon reestablishing communication.
  • The publishing of historic data messages is interleaved with the publishing of live data messages. 
  • Default 100

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