Sequence Of Operation:
Initially the hot water pump is shown as "OFF" at the button.
As the operator, you can click the button to request the
pump be turned "ON".
When the operator requests the pump ON action, the message "ON" is published via DSN. The SVG SCADA drawing subscribes to the data.
When the message is received via DSN, the SVG SCADA changes the button status display from OFF(red) to ON(green).
Also the pump's impeller symbol will then be rotating, and flow arrows will move along the hot water piping.
When the pump is ON (green), the data from the field-mounted transmitters are sent over the DSN every two(2) seconds. When the values arrive at the SVG SCADA drawing, the dial of the various gauges moves to display their associated values.
The position of the steam valve is also monitored each second, and displayed at the digital gauge.
The continuous strip chart displays its changing values at each minute (simulated: 2 seconds = 1 min).
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