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Siemens Building Technologies Basic Documentation RVD230 CE1P2383en
HVAC Products 26 Function block Test and display 27.05.2004
26 Function block Test and display
26.1 Operating lines
Line Function, parameter Unit Factory setting Range
161 Sensor test 0 0…11
162 Display of setpoint 0 0…11
163 Relay test 0 0…10
164 Speed of speed-controlled pump Display function
165 Display of digital inputs Display function
169 Display of active limitations Display function
170 Software version Display function
26.2 Sensor test
The sensor test includes the temperature acquired with each sensor and the voltage
present at the analog input. Interrogation is made with the setting buttons
and .
To identify the acquired variable, a code is used.
The numbers on the display have the following meaning:
--.- = open-circuit / no sensor connected to input B9
oo.o = short-circuit at input B9
--- = open-circuit / no sensor present
ooo = short-circuit at the other inputs
Code Input Acquired variable, measured value
0 B9 Weather (outside temperature)
1 B1 Heating circuit flow temperature
2 B3 D.h.w.
3 A6 Room unit
5 B7 Return temperature
6 B71 Return temperature
7 B72 Return temperature
8 B31 Storage tanks
9 B32 Storage tanks
10 B12 Heating circuit or d.h.w. flow
11 U1 DC 0…10 V / 0…130 °C
26.3 Setpoint test
The setpoint test includes the display of the setpoint assigned to each sensor. Interro-
gation is made with the setting buttons
and . To identify the acquired variable, a
code is used.
--- means: No setpoint available
Code Input Setpoint of the …
0 B9 Composite outside temperature
1 B1 Heating circuit flow temperature
2 B3 D.h.w. flow temperature
3 A6 Room temperature
5 B7 Return temperature
6 B71 Return temperature
7 B72 Return temperature
8 B31 Storage tanks
9 B32 Storage tanks
10 B12 Heating circuit or d.h.w. flow
11 – (Not available)
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