Data Tables
Data Tables reside on an SD card that may be installed in a UniStream panel.
Data Tables enable you to:
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Organize and manipulate data via Ladder functions
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Create data logs
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Create and implement Recipes
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Import values from Excel
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Allow users to enter/edit data into Data Tables via the panel, either by including Data Table widgets in your HMI application or via UniApps.
When you create a Data Table, you define its structure via the Properties Window. UniLogic generates a Struct for each table. Each table type has different Struct members.
You can populate a Data Table with values either manually or by importing them from Excel. Note that values are not retained until they are written to the SD Card.
Data Table types include:
DT: FIFO (Queue)
DT: LIFO (Stack)
Data Table: Indexed (DTI)
Data Table Status Messages
You can display them on the HMI screen via the Data Table Widget, an enables you to display WE: Web Data Table
Related Topics
Creating a Data Table
Entering/Editing Data Table Values
Data Sampling
HE: Data Table Widget
WE: Web Data Table
Data Table information and error messages are written to System Data Tags, which are located in System Operands: Data Tables.
Note that the tags are updated after any Data Table function runs.
Data Table System Operand Struct
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Data Table, Current Function Status (status codes are in the following table)
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Store Data Table to External File: Success Counter
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Store Data Table to External File: Failure Counter
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Load Data Table File to External File: Success Counter
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Load Data Table to External File: Failure Counter
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Data Table, Current Function Status codes
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-13
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Function Failed
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-12
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Reserved
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-11
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File does not exist/ SD card not present or not formatted
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-10
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External File cannot be loaded to PLC Data Table
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-9
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PLC Data Table cannot be stored to external file
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-8
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Format mismatch: the structure of the Data Table and the external file do not match
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-7
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The number of lines to load/store has not been specified within the function
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-6
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The file name parameter is empty within the function
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-5
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The number of lines specified in the function exceeds the number of lines that are in the Data Table
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-4
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The file name exceeds 64 characters
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-3
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Reserved
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-2
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Previous Data Table function is in progress
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-1
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One of the function parameters is in error
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