Home Support NI Product Manuals SystemLink 2020 R3 Manual

Table Of Contents

Read Tag Settings (G Dataflow)

Download Manual | Offline Viewer Required
Version:
Last Modified: February 18, 2020

Returns the settings of a tag.

A tag setting is a type of permission for the tag, such as read, write, modify, delete, and create. Based on the settings, a tag can complete any of the permissions an administrator specifies.

connector_pane_image
datatype_icon

tag in

Tag the server references to communicate measurement data.

datatype_icon

error in

Error conditions that occur before this node runs.

The node responds to this input according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Default: No error

datatype_icon

retention type

Aging policy which the tag server uses.

datatype_icon

tag out

Tag the server references to communicate measurement data.

datatype_icon

properties

Key-value pairs that exist as metadata on a tag.

datatype_icon

keywords

Specific words provided to find tags.

datatype_icon

error out

Error information.

The node produces this output according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.
datatype_icon

collect aggregates?

Boolean that determines if the node collects aggregate tag data.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported

Web Server: Supported in VIs that run in a web application

Recently Viewed Topics