Measurement Application

The Measurement application is used for broadcasting values of physical parameters monitored by C-Bus devices.

Measurement application messages can be displayed on eDLT and/or SpaceLogic C-Bus Automation Controllers.

Example: A C-Bus temperature sensor might broadcast the measured temperature for display on an eDLT, or for use by a SpaceLogic C-Bus Automation Controller to control an under-floor heating zone.

Measurement Application messages contain the following information :

A Device ID to identify the unit which broadcast the message
The channel number, which is used to differentiate between multiple measurements that the single device may produce

Example: The 4 channels of a 4 channel temperature sensor, or different parameters measured for a single channel.
The measured value
The units of the measured value (example: volts, amperes, degrees)

The dimmers provide measurements of the following values via the Measurement application.

Lamp Running Times
Channel Operating Temperatures
Power Supply Load Current
C-Bus Voltage
Unit Operating Temperature

There are multiple quantities available per channel, the different quantities use blocks of channel numbers with different offsets according to the parameter.

Channel Number	Quantity	Units
0-7	Channel 0-7 Lamp Running Time	Hours
128-135	Channel Operating Temperature	Degrees Celsius
252	Power Supply Load Current	Amperes
253	C-Bus Voltage	Volts
254	Unit Operating Temperature	Degrees Celsius

Measurements can be configured to broadcast periodically, by setting the Measurement Periodic Broadcast parameter. This can be set to an interval between 1 and 254 minutes.

NOTE: If periodic broadcast is not required, a trigger group can be configured to request either individual channels (by using the action selector corresponding to the channel requested), or an action selector of 255 to request all channels to be updated. This can also be used in conjunction with a regular broadcast.

In addition, individual quantities may be excluded from the regular broadcast by de-selecting them in the ‘Measurement Regular Broadcast’ options parameter.

Eventually, the ‘Lamp Running time measurements’ can be reset to zero by configuring a ‘Trigger Group’ and sending a ‘Trigger Event’ on that trigger group with the action selector set to the channel which is to be cleared, or an ‘Action Selector’ of 255 to clear all channels.