ADVANCED: Special Point Naming Assignment Instances

This section captures Switch’s protocol for addressing a few different scenarios that are less straightforward in the hopes of providing more standard deployment.

Central Plant with Multiple Chillers/Boilers

If there are points that may belong to the equipment or the plant, determine which Equipment Label to assign to them by how many of the points there are. For example, if there is a CHW Leaving Temperature point for every chiller, assign each to its respective chiller. However, if there is only one CHW Leaving Temperature point, assign it to the plant. Or do both where available.

Example 1:    Chiller.L03.CH-01 – CHW Leaving Temperature

                     Chiller.L03.CH-02 – CHW Leaving Temperature

                     Chiller.L03.CH-03 – CHW Leaving Temperature

Example 2:            CHWS – CHW Leaving Temperature

One Sensor for Multiple Pieces of Equipment

When there is one point that is tied to multiple pieces of equipment, the points should be tagged in the associated Equipment Type tag group with both Equipment Labels. For example, there is one zone temperature sensor for both VAV.L01.01 and VAV.L01.02. The ‘Zone Air Temperature’ point should have two tags in the VAV Tag Group: ‘VAV.L01.01’ and ‘VAV.L01.02’. This can be done by adding ‘|’ between the tags.

SCRIPT:

$VAV = ‘VAV.L01.01’ | ‘VAV.L01.02’

Multiple Points for One Piece of Equipment with the Same Name

In the case where there are duplicate point names for one piece of equipment, e.g. two zone air temperature sensors, the Point Name should remain consistent and only the Display Names should indicate the additional information, e.g. Zone 1 or Zone 2. It may be helpful to make a note of this in a working column to verify the Display Names are different.

Example 1:            Point Name: Zone Air Temperature

              Display Name: VAV.L01.5A – Zone Air Temperature (Zone 1)

Note: When an equipment has multiple points of the same type (e.g. Zone Air Temperature sensors for multiple zones) which will all have the same Template, it is not possible to share logic using our current system without additional tagging. 

When Display Name and Device Name should Differ

‘Devices’ are a legacy organizational feature of the Switch platform and do not necessarily correspond to real world entities. The Device represents the point object in the Switch system, and each Device may have multiple points belonging to it. As such, sometimes the Display Name will differ from the Device Name.

For example, for metering cumulative energy points an additional ‘sample’ point is automatically calculated by the Switch Platform. This new point will have the same ‘Device Name’ as the source point, and in order for us to differentiate it on platform the ‘Display Name’ should be changed.