A field binary device is structured to show its status via a SCADA 'Pilot Light' (An SVG circle, changing its fill color based on the device status).
The IoT has both a Subscribe and Publish value, available on a client computer's unique Channel.
Sequence Of Operation:
Initially the status field device is shown as open contact, with the SCADA Pilot Light as red.
The field device contact is monitored as opened/closed.
Click below to the simulate the change of the device status. This will publish the change.