"Store & Forward" is a self healing 21 CFT Part 11 archiving system that automatically stores data during a communications failure and then forwards this to the configured server when communications have been reinstated.
This results in secure electronic recording with total data integrity.
Normal Operation
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Process value and audit trail sent directly to Central Historian such as Eurotherm INSQL
Missing Data in Historian caused by
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Communicatons failure
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PC Failure
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Historian Failure
Store, Forward and Backfill Action
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Identify missing data period
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Retrieve data from .UHH
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Backfill the control Historian with missing data
T2550 PAC provides
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Dual Redundant Data Acquisition
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Secure .UHH created and stored at local level