System.Tag.readValue¶

Description¶

Read tag value(s).

Grammar¶

System.Tag.readValue(path: string): Promise

System.Tag.readValue(path: Array): 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);

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