Device Supervision; Overview; Activate Function; Create Device List - Siemens RMB795B Basic Documentation

Purpose and function
Note
Configuration
Notes
Prior to creation
Settings
Siemens
Building Technologies
16

Device supervision

16.1

Overview

The device supervision checks the connections (bus communication) to the
RXB/RXL room controllers and the RDG/RDF/RDU room thermostats. This serves
the following purposes:
• Checking the number of connected individual room controllers per room group.
• Detecting the failure of 1 or several room controllers
The individual room controllers are queried on a regular basis as per the generated
device list. If the RMB795B central control unit does not receive a reply, it will
generate a fault status message.
The geographic zone assigned to the individual room controllers is the key to
supervision. The individual room controllers supervised are only those assigned to
one of the activated room groups.
If the individual room controllers are already supervised by other devices (e.g. the
ACS790 plant operating software or the OZW772 web server), we recommend
deactivate function. This measure should be taken to keep the bus load as low as
possible.
16.2

Activate function

To activate, device supervision must be switched on via the operating line
"Function":
Main menu > Commissioning > Device supervision >
Operating line
Function
When the function is deactivated, no periodic supervision telegrams are sent via
the bus.
Pending alarms are not deactivated if the function is switched off.
But the device list can also be created when the function is deactivated. This is
because the device list is also required for other functions, such as min / max
supervision of the room temperature.
16.3

Create device list

When creating the device list, complete all commissioning work on the RMB795B
central control unit and on the individual room controllers.
Bus connection to the individual room controllers must be ensured.
Main menu > Commissioning > Device supervision >
Operating line
Device list
Identified devices
Central control unit RMB795B
Device supervision
Range
Off, On.
Range
Creating, updating, deleting
Display of identified room
controllers, room thermostats
Factory setting
Off
Factory setting
Blank
127 / 144
CE1P3122en
18.01.2012