Sometimes things don't go quite as expected. Connections get broken, switches die, machines crash. Aside from taking reasonable steps to prevent these occurrences, it is especially important in HMIs to be able to gauge the health and accuracy, also called quality, of what is displayed at a glance. For these reasons, components will get visual overlays for various reasons to indicate that the data they are displaying is not good.

Video recorded using: Ignition 7.9


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