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System.Tag.readValue

Description

Read tag value(s).

Grammar

System.Tag.readValue(path: string): Promise<any>

System.Tag.readValue(path: Array<string>): Promise<{path: string; value: any}>

  • Parameter

    path - Tag path(s)

  • Return

    Single tag value or multiple tag values and paths

Code Example

Get the value of the tag "Device:Temperature".

const tagValue = await System.Tag.readValue('@Device:Temperature');
console.log(tagValue);
Get the path and the value of the tags "Device:Temperature" and "Device:Power".

const tags = await System.Tag.readValue(['@Device:Temperature','@Device:Power']);
console.log(tags);