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A Tag represents a register to poll from the End Device. The tag contains different options shown below.

Configuration

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Property

Description

AliasName

This is the name the Tag will be given when it is published via MQTT

Register

This is the register Edge ACM will poll from the End Device

Back Fill

If enabled, all value changes, obeying deadband, for this tag are stored and published.

NOTE: Currently Only works with Sparkplug B Publishing

Deadband Type

This allows you to enable a Deadband for the Tag. There are 3 4 options available:

  • None will make the current value of the tag publish on any change from previous value.

  • Every Scan will make the current value of the tag publish on any poll, even where the value has not changed.

  • Absolute will make the tag update only if the current value is greater or less than the previous value plus/minus the Deadband.

  • Percentage will make the tag update only if the current value is greater or less than the previous value plus/minus the Deadband divided by 100.

Deadband

This sets how much the current value must differ from the previous value to be published again

High Limit EnabledTrigger Conditions

If enabledany exist, the High Limit is used when evaluation value changes

High Limit

If the Current Value of the Tag is above this point Deadband is ignored and the Tag is published on any change

Low Limit Enabled

If enabled, the Low Limit is used when evaluation value changes

Low Limit

If the Current Value of the Tag is below this point Deadband is ignored and the Tag is published on any changetriggers are evaluated on value change and if met, the quality of the tag is updated and Deadband is ignored

Trigger Conditions: Condition

This sets how the current value will be compared to the preset value. There are 5 options available:

  • Equals will return true if the current value is equal to the preset value in the trigger.

  • Greater Than will return true if the current value is greater than the preset value in the trigger.

  • Less Than will return true if the current value is less than the preset value in the trigger.

  • Greater Than or Equal to will return true if the current value is greater than or equal to the preset value in the trigger.

  • Less Than or Equal to will return true if the current value is less than or equal to the preset value in the trigger.

Trigger Conditions: Value

This sets the value to which the current value will be compared.

Trigger Conditions: Quality

This sets the quality the tag will take if a trigger is met. There are 3 options available:

  • Triggered will set the quality to 196.

  • High will set the quality to 193.

  • Low will set the quality to 194.

Tag Group

The parent tag group for this tag.