Detect Value Change 1Ch

The Detect Value Change 1Ch detects and counts changes in numeric input values.

Optionally, a Boolean signal can be selected for the Enable Execution input so that the algorithm is only active if the value of the selected signal is TRUE.

Configuration options

• Tolerance: The tolerance refers to the input value of the last detected value change. If the input value is outside this tolerance, a value change is detected.

Output values

• Value Changed: TRUE, if a value change was detected, otherwise FALSE.
• Count: Count up every time Boolean Switch is TRUE.
• Last Event: Indicates the time of the last triggered event → the event can be dragged and dropped into the Scope chart to display it as a trigger-event

Standard HMI Controls

For the Detect Value Change 1Ch algorithm, the following HMI controls are available for generating an Analytics Dashboard:

1. The SingleValue control visualizes the output values Count and Last Event.

2. The Table Control and Multivalue Control visualize all output values.

Alternatively, customer-specific HMI controls can be mapped using the Mapping Wizard.