Official | HULFT IoT EdgeStreaming Adapter Reference First Edition: July 1, 2021
Monitoring of file update
When a line is written to a text file targeted for monitoring, the value written to that line is output to the subsequent component.
You can display the monitoring of file update operation screen by displaying the script canvas on the Designer screen, clicking the following items in the following order, and then dragging and dropping the component icon onto the script canvas:
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Tool palette > File > Basic > Monitoring of File Update
Figure 4.2 Monitoring of file update operation screen
(1) Field list
This is a list of the fields to configure for the monitoring of file update operation.
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Field Name |
Initial Value |
Setting Value |
Omission |
Notes |
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|---|---|---|---|---|---|
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Name |
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Single-byte alphanumeric characters and certain symbols (*1) |
- |
A value that begins with a single-byte alphabetic character |
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Required settings |
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File name |
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- |
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Skip writing until startup |
(*2) |
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- |
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Comment |
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Comment |
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Characters |
✓ |
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✓ |
: |
Possible to omit |
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- |
: |
Impossible to omit |
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*1 |
: |
Only "_" (underscore) can be specified. |
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*2 |
: |
The check box is not selected for non-monitoring targets. |
(2) Description of each field
This section explains each of the fields to configure for the monitoring of file update operation.
After changing these settings, click Finish to save the settings.
Click Cancel to discard the changes.
- Name
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Name of the monitoring of file update operation component
Single-byte alphanumeric characters and "_" (underscore) can be used.
Use a value that begins with a single-byte alphabetic character.
Required settings
- File name
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Name of the file that is monitored for updates
Specify the file name as the full path or relative path.
If you use a relative path, the file for writing is stored based on the following path according to the execution location:
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For Windows
Table 4.5 File path for writing
Execution Location
Starting Point of the Path
Studio execution
$EDGESTREAMING_HOME\client\es-agent\projectname\scriptname
Remote device execution
The same level as EdgeStreaming Runtime (es-agent.exe)
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For Linux
Table 4.6 File path for writing
Execution Location
Starting Point of the Path
Remote device execution
The same level as EdgeStreaming Runtime (es-agent)
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- Skip writing until startup
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Skip reading of data that is written before EdgeStreaming Runtime startup
Set whether to skip the reading of data that is written to the file specified in File name before EdgeStreaming Runtime startup.
Comment
- Comment
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Comment regarding the monitoring of file update operation
You can enter a comment.
Official | HULFT IoT EdgeStreaming Adapter Reference First Edition: July 1, 2021