KRAL BEM 100 - Operation; Carrying out the Basic Settings; Setting the Modbus Address; Managing the Density Table

9 Operation
9.1 Carrying out the basic settings
9 Operation
9.1 Carrying out the basic settings
9.1.1 Setting the Modbus address
Modbus addressing is effected by means of two address selector switches on the circuit board of the
processing unit.
X10 X1
5
7
9
6
0
8
1
2
3
4
5
7
9
6
0
8
1
2
3
4
Fig.8: Modbus addressing
1. Remove the cover of the processing unit.
2. Set the Modbus address via the address selector switchesX10 andX1.
Example: For the Modbus address27 set the address selector switchX10 to2 and the address
selector switchX1 to7.
9.1.2 Managing the density table
Parameter "Density_Determination"
The processing unit offers several possibilities of managing density calculation with the parameter
"Density_Determination".
Two density tables for two different pumped liquids can be stored in the processing unit for the case
that the plant is operated with two pumped liquids. If the plant is operated with only one pumped liquid,
only one density table is used.
Density determination through Modbus value
Automatic selection of the density table at manual input of the density values (no
density calculation as in Modes3,4,5)
0
Selection of Density table1 1
Selection of Density table2 2
Automatic selection of density calculation for diesel or heavy fuel oil 3
Density calculation for diesel (LDO/MDO) 4
Density calculation for heavy fuel oil (HFO) 5
Tab.21: Parameter "Density_Determination"
16
OIE 26en-GB Edition 2021-08
Operating instructions