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Network interface
3
3.4 Description of the SNVTs for variant 4 boilers
3.4.1 General
0
Time
Tab. 46 Value for comparison of the time in the Buderus control system with the LON network
Format: YYYY/MM/DD hh:mm:ss
1
Outdoor temperature
Tab. 47 Display of the current outdoor temperature
Note:
230 °F (110 °C) is an invalid value (e.g. no temperature sensor connected, sensor defective, etc.)
2
Error message 1 boiler 1, 2
3
Error message 2 boiler 1, 2
4
Error message 3 boiler 1, 2
5
Error message 4 boiler 1, 2
Tab. 48 Outputs for error messages 1 (control panel with address 1) and boiler 2 (control panel
with address 2)
For the error list, see Chapter 7, page 43.
The current errors are displayed per control panel. Up to 4 errors that occurred at the same time can
be displayed. If an error has been eliminated, it disappears from the error list. If more than four errors
have occurred, an error not yet eliminated moves up and is displayed.
Error messages are displayed as 2-byte values (2 x 8 bits). The first byte (the first 8 bits seen from
the left) displays errors from the control panel of boiler 2. The second byte (the remaining 8 bits)
displays errors from the control panel of boiler 1.
Errors that occur are to be interpreted as follows:
First byte - error control panel 2
Display
0
0
Interpretation
2
Tab. 49
Errors are displayed as binary values and must be converted to decimal values. By comparing with
the error list (see Chapter 7, page 43), the associated texts are assigned to the error numbers.
26
Technical Information Logamatic LON-Gateway - Subject to modifications resulting from technical improvements!
0
0
0
0
1
2
3
4
2
2
2
2
SNVT_time_ stamp(84)
SNVT_temp_p(105)
SNVT_state(83)
SNVT_state(83)
SNVT_state(83)
SNVT_state(83)
Second byte - error control panel 1
0
0
0
0
5
6
7
0
2
2
2
2
nviUhrzeit
nvoAussen_Tp
nvoFehler1_R1_R2
nvoFehler2_R1_R2
nvoFehler3_R1_R2
nvoFehler4_R1_R2
0
0
0
0
1
2
3
4
2
2
2
2
7
2
2
2
2
2
0
0
0
5
6
7
2
2
2
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