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Siemens Building Technologies Basic documentation RVD240 CE1P2384en
HVAC Products 25 Function block Test and display 27.05.2004
25 Function block Test and display
25.1 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
25.2 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 Flow temperature heating circuit 1 or heat converter
2 B3 D.h.w. flow temperature
3 A6 Room unit heating circuit 1
4 A6 Room unit heating circuit 2
5 B7 Return temperature
6 B71 Return temperature
7 B72 Return temperature
8 B31 Storage tank temperature
9 B32 Storage tank temperature
10 B12 Flow temperature heating circuit 2
11 U1 DC 0...10 V / 0…130 °C
25.3 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 flow temperature heating circuit 1 or heat converter
2 B3 d.h.w. flow temperature
3 A6 room unit heating circuit 1
4 A6 room unit heating circuit 2
5 B7 return temperature
6 B71 return temperature
7 B72 return temperature
8 B31 storage tank temperature
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