Start the Energy Wizard Set-up program, click on the large button 'Tag Set-up'. When the 'Tag Set-up' form appears select the scan type 'Rate - DDE'. The following will be displayed.

The 'Rate - DDE' scan type enables an Energy Wizard Monitor Tag to be configured so that it reads a value which represents a count of pulses from a DDE source in another application. Each pulse will represent a pre-determined quantity of energy; for example kWhrs, cu.m etc. A device will count the pulses up to a set maximum value and then reset itself to zero at which point it will begin the count again. The Energy Wizard Monitor will read these pulses and accumulate the appropriate quantity of energy for the period.

This is a very accurate method for retrieving energy data because the integration of energy used is performed by an on-line dedicated power transducer which has the ability to output a pulse whenever a certain amount of energy has been used.

• Tag Name: - Enter the name you wish to call the Tag into the text box.
• Tag Type: - Select the Tag Type from the combo box. For this set-up select 'Input - Energy Totalising'.
• Scan Type: - Select the Scan Type you require from the combo box. For this set-up select 'Rate - Recorder'.
• Supplier: - Select the default Supplier you require this Tag to be associated with from the combo box.
• Enable Tag: - Check the check box to enable this Tag.
• DDE Topic: - Enter the DDE Topic into the text box.
• DDE Item: - Enter the DDE Item into the text box.
• Send Rate to Scada Tag: - The Energy Wizard Monitor calculates an instantaneous rate from the data received. This rate can then be sent to a MicroScan2000 Input Tag for display and recording purposes. To do this enter the appropriate MicroScan2000 Input Tag number between 1 and 1024. If you do not wish to send any data then set the text box to 0. The calculated rate may need smoothing in the form of averaging. To average the rate, adjust the selection: 'Recorder Display Type' on the 'General Tab' found in the 'General Set-up' form. If you increase the averaging in this option then you will increase the averaging (smoothing) of the rate that the Energy Wizard Monitor outputs to the MicroScan2000 Input Tag.
• Units/Pulse: - Enter the quantity of energy per pulse into this text box.
• Max Rate: - Enter the maximum rate that could ever be attained by this tag. Note that this is only included as a safety measure and if not required then enter 0 into the text box and it will be disabled. If the value is greater than 0 then this option will be enabled. How it works is that if the "Average Rate" as set in the "General Setup" should ever exceed the above specified "Max Rate" then it will be assumed that an error has occurred in the data collection devices and that the additional energy represented by the data from this scan will be ignored.
• Max Count: - Enter the maximum count of pulses into the text box. This is typically 1023 or 4095, but could be any whole number up to 32,000.

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