CE1P2522E / 30.03.2000
Basic Documentation RVL470
Siemens Building Technologies
50/68
Function block "Service functions and general settings"
Landis & Staefa Division
13.5.2. Source of outside temperature
If, in interconnected plants, the outside temperature is delivered by the bus, the tem-
perature source can be addressed either automatically or directly (oerating line 180).
•
Automatic addressing:
Display, entry
Explanation
SET
A
(For automatic addressing)
ACTUAL
xx.yy
Display of source address selected by automatic addressing:
xx = segment number
yy = device number
•
Direct addressing:
To be entered is the source address: xx.yy
xx = segment number
yy = device number
If the controller is operated autonomously (with no bus), there will be no display and an
entry is not possible.
If the controller is used in an interconnected plant and if it has its own outside sensor, it
is not possible to enter an address (if an entry is made, the display shows OFF). In that
case, the controller always uses the outside temperature signal delivered by its own
sensor. The address displayed is its own.
For detailed information about addressing of the outside temperature source, refer to
data sheet N2030E.
13.5.3. Addressing of devices
Each device connected to the LPB requires an address. This address is comprised of a
device number (a digit between 1 and 16) and a segment number (a digit between 1
and 14).
In an interconnected plant, each address may be assigned only once. If this is not ob-
served, proper functioning of the entire plant cannot be ensured. In that case, a fault
status signal will be generated (error code 82). If the controller is operated autono-
mously (with no bus), device number and segment number must be set to zero.
Since the device address is also associated with control processes, it is not possible to
use all possible device addresses in all types of plant:
Plant type D = 0
S = any
D = 1
S = 0
D >1
S = 0
D = 1
S >0
D >1
S >0
1
Permitted
Permitted
Permitted
Permitted
Permitted
2
Permitted
Permitted
Not permitted
Permitted
Not permitted
3
Permitted
Permitted
Permitted
Permitted
Permitted
4
Not permitted
Permitted
Not permitted
Permitted
Not permitted
5
Not permitted
Permitted
Not permitted
Permitted
Not permitted
6
Not permitted
Permitted
Not permitted
Permitted
Not permitted
D = device number
S = segment number
If an inadmissible address has been entered, a fault status signal will appear (error code
140).
For detailed information about the addressing of devices, refer to data sheet N2030E.
