12
c) Operation parameters:
- Signal processing characteristics (median averaging, arithmetic averag-
ing, etc.)
- Communication parameters via RS-485 interface
- Types of emergency situations.
The WORK mode allows the user to change communication param-
eters via RS-485 interface (network address of the device, exchange rate
from 1200 to 4800 baud).
1.5.3.4. SERVICE mode is a mode of preparation of the flow meter for operation
on the site.
SERVICE mode additionally (in relation to WORK mode) allows via
RS-485 serial interface to:
a) View:
- The configuration of the pipeline section (base, axial base, nominal diam-
eter)
- Setting parameters for the ultrasonic signal
- Zero offset value and additional USS delay
b) Change:
- Operation modes and parameters of the universal and logic outputs
- Flow and volume measurement units (m
3
/h; l/min, m
3
, l)
- Device clock readings
- Device clock transition mode to "winter"/"summer" time
c) Adjust LCD contrast, operating time and measurement information update
period
d) Start the calculation of conversion factor or pulse weight for the universal
output
e) Zero accumulated volumes and archives.
1.5.3.5. ADJUSTMENT mode allows to view and modify all parameters without
exception.
Also, ADJUSTMENT mode allows to record the factory number of
the device via RS-485 serial interface.
1.5.4. Recording of operation results
1.5.4.1. The results of measurements and calculations are recorded in the internal
archives: hourly, daily, monthly, with the depth of the archives, given in
clause 1.2.4. Access to the archives is carried out through the RS-485,
M-Bus or Wireless M-Bus interfaces and NFC radio transponder.
Hourly, daily and monthly archives are cyclical and have the same
structure.
The values of the following parameters are recorded in each record:
-
V+
– total volume in the direct flow direction over the archiving interval,
m
3
(l)
-
V-
– total volume in the reverse flow direction over the archiving interval,
m
3
(l)
-
ER
– error code
-
ER time
– total time, during which there was no accumulation of volumes
in the archive
