User Manual

CM2N8878en / 01.05.02 Siemens Building Technologies
2/4 Building Automation
The room temperature controllers on the BatiBUS are mapped as data points to the
BPS process image. During engineering, each controller is assigned an address and a
data point, and master/slave combinations and groups are formed in accordance with
the room assignment. On startup, the BPS transmits the configuration to the PNB and
requests the current controller values. During operation, all changes are sent to the
BPS, thus rendering their process image up-to-date at all times.
@AI2
@PLT12
BatiBUS
BPS
@AI1
@PLT11
@PLT1
@PLT2
@PLT13
M: Master
S: Slave
12
11 12
13
M/S
MS
PNB
MMM
8878Z02en
Group 1
Process image
Group 2
Room
Two VISONIK point types were used for the image. They have parameters containing
the information of the BATIGYR controllers and groups:
Point types Information
@PLT
Controller
The parameters of the controller data points comprise:
– Current room or return air temperature.
– Operating mode (Comfort, Economy, Standby).
– Setpoints for heating and cooling during Comfort and Economy.
– Window contact position and changeover status.
– Fan stage, valve position for hot and cold water.
– Energy values. See topic "Energy handling “ on page 4.
@AI
Groups
Groups comprise several individual room controllers and
master/slave combinations (M/S). The parameters of these data
points comprise:
– Operating mode (Comfort, Economy, Standby).
– Setpoints for heating and cooling during Comfort and Economy.
– Changeover status and fan stage.
The information from the integrated data points and from the project-specific
configuration allows the BPS to carry out the following central functions:
• Coordinate the controllers with respect to scheduler program, operating mode,
setpoints.
• Master/Slave function if there is more than 1 controller per room:
Operating mode, setpoints for heating and cooling, changeover, VCF (ensures that
heating and cooling outputs are not active at the same time), window contact.
• Force (COLBAS task): Resets all controller setpoints to the group values.
• For energy handling, refer to page 4.
Max. 120 BATIGYR controllers can be integrated in one VISONIK BPS with the
following limits and rules:
• Up to 24 groups at max. 16 master controllers per group. The following applies:
– All master controllers must belong to a group.
– Each controller with a room unit must be a member of a group.
– Each controller can be a member of just one single group.
• Max. 60 master/slave configurations at max. 10 controllers per configuration.
• Max. 1 room unit per master/slave configuration (linked to the master).
Integration
Principle of
integration
Point types and
information
Communication
master functions
System capacity