10
To provide data exchange with external devices, Measurement and
Calculation board is equipped with Universal output, M-BUS output and
RS-485 output (optional).
The graphic Liquid Crystal Display (LCD) makes visible
measurement data. The LCD displays alpha-numeric data in two lines
(16 characters per line). Displayed data is updated with use of the
button located near the LCD on the front panel.
1.4.3. Operating modes
1.4.3.1. The flow meter operates in three modes:
- ADJUSTMENT
– adjustment and calibration
- SERVICE
– start-up procedures
- OPERATION
– user mode.
The operating modes differ by level at which the user can access
certain data (transferred via RS-485 interface) and modify flow meter's
configuration settings.
Maximum rights are granted in ADJUSTMENT mode. The mode
allows the user to modify all of the configuration settings. Minimum
rights are given in OPERATION mode.
The set of displayed parameters is the same in all operating
modes.
Flow meter's work in different operating modes is controlled via RS-
485 interface.
1.4.3.2. Flow meter's operating modes are set by placing (removing) jumpers on
J1 and J2 terminals, which are located on the board of Secondary Cal-
culation module.
Combinations of jumpers with regard to operating modes are
specified in Table 3 ("+" means that the terminal contacts are closed by
a jumper, and "-" means that the terminal contacts are opened).
Table 3
Mode
Terminal
Mode description
J1
J2
OPERATION
-
-
Operation
SERVICE
-
+
Start-up procedures
ADJUSTMENT
+
-
Adjustment
1.4.3.3. OPERATION mode
– flow meter's on-site operation.
In OPERATION mode, the user can view the following parameters:
1. On LCD: the current date and time, the values of the measured parame-
ters (volume flow, amounts accumulated in the forward and reverse di-
rection of flow, as well as their algebraic sum), the status of error situa-
tions (ER) and the version number of the software.
2. Via RS-485 or M-Bus:
a) Measurement values of: volumetric flow rate, flow volume totalized for
forward and reverse flow and their algebraic sum, velocity of liquid, cur-
rent value of USS velocity
b) Measurement data and "Mode" logs
c) Configuration settings: current date and time, specifications of output
