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Siemens
Basic Documentation RVP360
CE1P2546en
Building Technologies
17 Function block: Service functions and general settings
2017-07-24
17.5.2 Outside temperature source
If, in interconnected plants, the outside temperature is acquired via bus, the tem-
perature source can be addressed either automatically or directly (operating line
180).
Addressing
Display, input
Comments
Automatically
A xx.yy
Display A (for automatically) and xx.yy (ad-
dress of automatically selected source):
xx = segment number, yy = device number)
Directly
xx.yy
Source address must be entered
If the controller operates autonomously (without bus), there is no display and inputs
cannot be made.
If the controller is used in an interconnected plant
and
it has its own outside sen-
sor, it is not possible to enter an address (if an entry is made, the display shows
OFF). In that case, the controller always acquires the outside temperature from its
own sensor. The address displayed is the controller’s own.
For detailed information about addressing the source, refer to Data Sheet N2030.
17.5.3 Addressing the devices
Every device connected to the data bus (LPB) requires an address. This address
is made up of a device number (1...16, operating line 169) and a segment number
(0...14, operating line 170).
In an interconnected plant, every address may be assigned only once. If this is not
observed, the correct functioning of the entire connected plant cannot be ensured.
In that case, an error message is delivered (error code 82).
If the controller operates autonomously (without bus), the device number must be
set to zero.
Since the device address is also associated with control processes, it is not possi-
ble to use all possible device addresses in all types of plant:
Plant type
G = 0
S = any (no bus)
G = 1
S = 0
G = 1
S = 1...14
G = 2...16
S = any
4 - x
Permitted
Permitted Permitted Permitted
5 - x
Permitted
Permitted Permitted Not
permitted
6 - x
Permitted
Permitted Permitted Not
permitted
G = device number
S = segment number
If an inadmissible address has been entered for the selected plant type, an error
message appears (error code 140).
For detailed information about addressing devices, refer to Data Sheet N2030.