Revise DMA Zones

Q: After configuring DMA Zones, we used a Data Exchange file to move some Demand Meters to different zones. We also reassigned a Supply Meter as a Demand Meter. After importing the Data Exchange file, the Demand Zone changes took effect. BEACON, however, seems to have ignored our Supply Meter change. The Supply Meter card shows it as both a Supply and a Demand Meter.

What happened?

A: Your Data Exchange file imports reveal what happened. Your first file (Table 1) configured the Meter named South Well as a Supply Meter.

Meter_ID … All the other data
fields in your Data
Exchange file…
Supply_Zone_ID Demand_Zone_ID
South Well 1-A

Table 1. This file assigned the meter called South Well as a Supply Meter with a Zone ID of 1-A.

When you “changed” the Supply Meter to a Demand Meter with a Zone ID of 2-A, you left the Supply_Zone_ID field blank (Table 2).

Meter_ID … All the other data
fields in your Data
Exchange file…
Supply_Zone_ID Demand_Zone_ID
South Well 2-A

Table 2. This file was used to assign the meter called South Well as a Demand Meter with a Zone ID of 2-A.

A blank cell in a Data Exchange file tells BEACON to “leave the current value unchanged.” Because there was a value in the Supply_Zone_ID field in the earlier import, that value along with the new Demand_Zone_ID value are displayed on the card.

Create a third Data Exchange file, and put the _CLEAR_ command in the Supply_Zone_ID column (Table 3). This will remove the Supply_Zone_ID from the South Well meter, and create the configuration you want.

Meter_ID … All the other data
fields in your Data
Exchange file…
Supply_Zone_ID Demand_Zone_ID
South Well _CLEAR_

Table 3. This file will remove any value entered in the Supply_Zone_ID column via previous Data Exchange files.

 

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