Add logging for a data point

Here's how to do it

1. Go to Configuration and select Logging.

2. Click Add Logging.

3. Select the data point to log.

4. Select the logging type.

5. Select the interval.

6. Save.

Select the interval

Select how often the top-level system should retrieve data.

• 1 min and 5 min cause the host system to send a request to the building for data at the selected interval.

• If changes occur, data is logged as soon as updates are available. This should only be used for event-based protocols, such as KNX and BACnet.

Select type

• Standard displays logged data as a line chart.

• Cumulative displays data as a bar chart and is suitable, for example, for energy meters.

Once logging has been added, you can proceed to views, alarms, and calendar.

Color and Y-Axis in Charts

Once the log has been created, you can reopen the log entry to control how the data point is displayed in graphs.

Color

Select a fixed color if you want the data point to always appear in the same color in graphs.

Y-Axis

Select which Y-axis the data point should use in graphs:

• Left

• Right

If the field is left blank, Evolo automatically selects the y-axis based on the data points and units displayed in the graph.

Update multiple log points

You can also select multiple log points and update their color or y-axis simultaneously.
When performing a bulk update, a blank value means that the existing setting remains unchanged.

Troubleshooting

Logging Stops

Probable cause:
The gateway has incorrect time settings.

Solution:
Verify that the gateway has the correct time. You can use NTP to keep the clock synchronized.