49 - 49 021537/06/10
7.9 Enquiry about software version
The command SV is used to enquire about the software version. For further information see
Command SV
7.10 Operating Hours Counter
The instrument provides an operating hours counter, which can be queried via the parameter OH
(operating hour). The counter returns the operating hours in “hours”, see also Command OH
The operating hours counter overflows after 11,4 years and restarts with 0.
7.11 Storing of System Events
The instrument has an internal circular buffer, that stores important system information. The
parameter SM (system event mask) determines, which events are to be stored in the system event
memory. The following events are available:
1. System start (valence 1)
2. Closing up in configuration mode (valence 2)
3. Description of internal registers PR and PT (valance 4)
4. No valid data over a longer period (valence 8)
5. Averaging buffer fill level < 2 increments (basis is the value from the extended status)
(valence 16)
6. Temperature difference from X- to Y-distance >3Kelvin (at WV < 2m/s) (valence 32)
7. Temperature difference from X- to Y distance > 5Kelvin (at WV < 2m/s) (valence 64)
8. Temperature difference from X- to Y-distance -<7Kelvin (at WV < 2m/s) (valence 128)
9. System voltage falls below voltage of parameter HC, see heating control (automatically
switched on, when1,2 and 3 are activated).
10. System voltage exceeds voltage of parameter HC, see heating control (automatically switched
on when1,2 and 3 are activated).
If, for ex., the events ‘system start’ and ‘description of internal registers PR and PT’ shall be stored,
the value for SM is to be set to 5, see also Command SM
The values are stored in the memory along with the operating hours counter. The output is effected
in clear text.
By the query 00SE the system outputs the stored information. The output starts with the Text
‘System events:’
“SM5 //output of the current parameter SM
and ends with the output
‘End’.
Between both output the status signals are output in chronological order.