Overlay temperature or presence on a Chart’nX meter chart

In the Chart’nX energy generator, an overlay adds a temperature line or a presence band to a meter’s consumption chart. The Display boxes of a submeter decide whether it appears in the chart and in the total distribution.

For administrators and installers, from the meter card in Configure, once its measurement is filled in as described in the main meters. The options offered depend on the card.

Declare the source to overlay

A source is declared once for the whole dashboard, in the Overlays section located below General. First check the ones that already exist.

1. Click + Add source, then choose Outdoor temperature, Water temperature or Presence / absence. In this menu, a source already there is marked already added; Custom source… is for other measurements.
2. In the source card, choose the Protocol, then fill in the KNX Group address, for example the fictitious 1/2/3, or the Modbus Configuration.
3. For presence, check High / low state: on the ▲ row, labeled Present, choose the value, 1 or 0, that the sensor sends when someone is present.

Add the overlay to the meter

1. In the meter card, under Overlays, click + Add overlay.
2. Choose the source: values, such as temperatures, are listed under Value line; states, such as presence, under Band. A chip appears with the color and the name of the source; its ▾ arrow lets you change it.
3. Save the dashboard.

To remove an overlay, click the cross on its chip, then save: neither the source nor the physical sensor is deleted. If the source is missing, Create a source…, at the bottom of the list, takes you back to the Overlays section.

A chart takes at most one Value line and one Band; the add button disappears once the card has all those it offers:

Card	Overlays offered
General meters - Apparent power	Band only, for example presence
General meters - Total energy consumed	Value line and Band
Submeter outside a group	Value line and Band
PV meter, Battery meter, Grid meter	None

In a group, a submeter shows neither Overlays nor Display: the group has its own overlays, in the Groups section.

Choose where a submeter appears

In the Display section of a submeter:

• Show in chart controls its chart display;
• Include in the total pie chart controls its inclusion in the distribution;
• Deduct from Reste (Reste: remainder) is unchecked when this meter is already measured by another submeter (nested meter). It is then already counted elsewhere: Include in the total pie chart is unchecked and locked.

These boxes do not delete the submeter. For the order of panels or grouping, see Groups and order.

Check the result

After saving, check the meter’s chart in the dashboard. If the source is declared but the overlay is still missing, check the period and the expected measurements.

Troubleshooting

• A warning symbol on the chip, tooltip Source incomplete: in Overlays, complete the name, the address and, depending on the kind, the unit or the state labels of the source. As long as it is incomplete, the dashboard cannot be saved.
• Do not modify a sensor or an address used for other purposes to solve a display problem.

For other symptoms, follow the meter troubleshooting. If the problem persists, contact support@can-nx.com with the dashboard, the card, the chosen overlay and any message.