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Siemens Building Technologies
Basic Documentation RVP540 / RVP550
CE1P2488en
HVAC Products
Description of the heating engineer settings
18.10.2002
4.245 LPB segment address
The segment address and the device address are used as destinations in the bus sys-
tem (similar to a postal address). To ensure communication, each device must be cor-
rectly addressed.
Setting range
Unit
Factory setting
0...14 –
0
Entry of the segment address is especially important when used in a system. With this
setting, the system can be subdivided into a number of segments. Entry:
0 Heat
generation
segment
1...14 Heat
consumer
segment
A bus segment is comprised of a number of devices that are used in the same place of
application. All devices in a segment must carry the same segment address.
For more detailed information about the addressing of devices in a system, refer to the
data sheets “Local Process Bus (LPB) Basic System Data” (doc. no. CE1N2030E) and
“Local Process Bus (LPB) Basic Engineering Data” (doc. no. CE1N2032E).
4.246 LPB power supply
•
A central bus power supply is not required in systems with up to 16 devices
•
Straightforward extension of systems
The bus power supply via the controllers enables the bus system to be powered directly
by the individual controllers (no central bus power supply). The type of bus power sup-
ply can be selected.
Setting range
Unit
Factory setting
0 / 1
–
1
Entry:
0 Off
No bus power supply via the controller.
1 Automatically
The bus power supply (LPB) via the controller is automatically switched on and
off depending on the requirements of the LPB.
The actual status of the power supply is shown on operating line 853.
The bus system (LPB) can be powered either via the individual controller bus power
supplies or via a central bus power supply.
For more detailed information about the bus power supply and its engineering, refer to
the data sheet “Local Process Bus (LPB) Basic Engineering Data” (doc. no.
CE1N2032E).
Description
Setting
Effect
Segment number
Note
Benefit
Description
Setting
Effect
Note
Bus power supply
Note
