KROHNE OPTIMASS Series Handbook page 90

System Control – Menu 4.8
This menu allows the setting up of certain instrument functions depending on the selected process
condition. If a pre-determined condition arises (as selected in Fct. 4.8.2) then one of the following options
can be selected.
Function Fct. 4.8.1.
Key Fct. 4.8.1.
Off
Flow = 0
Flow = 0 / RST
Outputs off
Condition Fct. 4.8.2.
This menu allows the setting of the process condition for the instrument actions as described in Fct. 4.8.1.
The following can be selected:
• Density or
• Temperature
If one or the other is selected then the limits can be set up in the reset menu.
Low Limit Fct. 4.8.3.
The minimum value may be programmed here.
If density was selected then the value and units for density will appear. The same for temperature. The
units will depend on what was selected in density or temperature measurement menus Fct 3.2.3 or 3.2.7.
High Limit Fct. 4.8.4.
The maximum limit for density or temperature can be programmed here. Similar to Fct. 4.8.3.
Communication Options – Menu 4.9
This menu is normally a read only menu. It indicates the communications protocol used by the converter.
Protocol Fct. 4.9.1.
This menu displays the communication protocol fitted.
Options available:
• Off – no options fitted
• Serial – Internal KROHNE service and calibration protocol
• HART®
• Modbus
• Profibus PA
• Foundation Fieldbus
• KROHNE – Proprietary KROHNE protocol.
Address Fct. 4.9.2.
The instrument address on the bus can be programmed here. This function is not active if off or Serial has
been selected in Fct. 4.9.1.
When HART has been selected only point to point is available with the MFC 050. If the MFC 051 is used,
point to point as well as multi drop is possible.
• For HART on MFC 050 the address is defaulted to 0.
• For HART on MFC 051 the selectable address is from 0 to 16.
Baud Rate Fct. 4.9.3.
Available for Modbus when selected in Fct. 4.9.1.
Note that Modbus is only available in the MFC 050.
Ser. Format Fct. 4.9.4.
For option Modbus only.
Function not activated
If process condition arises, flow outputs will be forced to zero.
Flow outputs are driven to zero and totalizer is reset.
All outputs switched off.
Installation and Operating Instructions OPTIMASS 89