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, a value is sent to activate the pump starter field device.
This then returns a value to SCADA to change 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 temperature transmitter is sent over the DSN every two(2) seconds. When it arrives at the SVG SCADA drawing, the dial of the temperature gauge moves to display the data.
The position of the steam valve is also monitored each second, and displayed at the digital gauge.
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Message Pump: OFF |