10 Block SPECIAL FUNCTION Device Functions Proline Promass 83 MODBUS RS485
164 Endress+Hauser
HISTORY
OPERATING
FREQUENCY
FLUCTUATION
MODBUS register:
Data type:
Access:
7484
See Note
Float
read
The last ten values of the operating frequency fluctuation since the saved values
were last reset appear on the display.
User interface:
5-digit floating-point number, Hz
! Note for MODBUS!
The various histories are available via the following MOBBUS registers:
• History 1 = MODBUS register 6723
• History 2 = MODBUS register 6725
• History 3 = MODBUS register 6727
• History 4 = MODBUS register 6729
• History 5 = MODBUS register 6731
• History 6 = MODBUS register 6733
• History 7 = MODBUS register 6735
• History 8 = MODBUS register 6737
• History 9 = MODBUS register 6739
• History 10 = MODBUS register 6741
ACTUAL
DEVIATION
MODBUS register:
Data type:
Access:
7485
6745
Float
read
This function displays the deviation between the measured fluctuation in
operating frequency and the reference values (FACTORY or USER) selected in the
SELECT REF. COND. (7402) function, see Page 149.
User interface:
5-digit floating-point number, Hz
WARNING LEVEL
MODBUS register:
Data type:
Access:
7486
6743
Float
read/write
! Note!
This function is not available unless the ON setting was selected in the
WARNING MODE function (7403).
Use this function to specify a limit value for the fluctuation of the operating
frequency. A notice message is generated if the limit value is exceeded.
Input: 0 to 99999 Hz
Factory setting: 1000 Hz
Function description
SPECIAL FUNCTION → ADVANCED DIAGNOSTICS → FREQU. FLUCTUATION