LF: Load DTI from File
This Ladder function copies data from a *.udtf file located on an SD card into a DTI. You can load an entire Data Table, a single row, or multiple rows. Any data in the rows will be overwritten.
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A
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Data Table: Destination
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Select the Data Table you want to load a file to.
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B
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Start Row Number: Destination
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The data will be loaded beginning with this row.
Assign a Data Tag or enter a constant.
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C
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Source File Name
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Assign a string to provide the name of the source file.
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D
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Start Row in Source File
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Select the start row within the source file. The data will be loaded from this file.
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E
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Number of Rows to Load
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This is the number of rows the function will load.
Assign a Data Tag to provide the number of rows, or enter a number.
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F
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Status
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Assign a Data Tag to hold the function’s status messages.
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Status Messages
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When using Store DTI to File followed by Load from File:
- Allow approximately 15 seconds for the Store function to complete its procedure before activating the Load function.
- Check the status of the Load function.
- If status ≠ 0, wait 1 second and run Load again.
See LadderSee Ladder
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1
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Function in progress
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0
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No errors
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-1
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Function failed
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-2
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Internal error. Contact Support.
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-3
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General Error.
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-4
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Internal error. Contact Support.
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-5
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Read file error
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-6
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Write file error
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-7
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CRC error. The structure of the Data Table and the external file do not match
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-8
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Signature file error
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-9
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PLC Data Table cannot be stored to external file
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-10
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External File cannot be loaded to PLC Data Table
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-12
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Internal error. Contact Support.
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-13
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Function Failed
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-14
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Append file error, no file created; see Help topic LF: Store DTI to File for more information
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-31
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Number of lines in file is 0
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-32
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File Name missing: the file name parameter is empty within the function
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-33
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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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-34
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The file name exceeds 63 characters
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-35
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Too many requests
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-36
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Internal error. Contact Support.
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-37
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Download in Progress
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-38
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Array locked by other utility
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Related Topics
Data Tables
Creating a Data Table
Data Table: Indexed (DTI)
LF: Write Row to DTI
LF: Read Row from DTI to Struct
LF: Insert Row to DTI
LF: Remove Row from DTI
LF: Clear DTI Row
LF: Find Value in DTI Column
LF: Copy DTI Column into Array
LF: Write value to DTI Column
LF: Store DTI to File (SD)
LF: Clear DTI
SD Management
