Endress+Hauser Proline Promass 83 - Page 62

7 Block OUTPUTS Device Functions Proline Promass 83 MODBUS RS485
62 Endress+Hauser
VALUE 20 mA
MODBUS register:
Data type:
Access:
4003
5805
Float
read/write
Use this function to assign the 20 mA current a value.
The value can be higher or lower than the value assigned to 0/4 (function VALUE
0_4 mA (4002), see Page 61). Positive and negative values are permissible,
depending on the measured variable in question (e.g. mass flow).
Example:
4 mA assigned value = −250 kg/h
20 mA assigned value = +750 kg/h
Calculated current value = 8 mA (at zero flow)
Note that values with different signs cannot be entered for 0/4 mA and 20 mA if
SYMMETRY is the setting selected for the MEASURING MODE function (4004).
In this case the message “INPUT RANGE EXCEEDED” appears on the display.
User input: 5-digit floating-point number, with sign
Factory setting: Depends on nominal diameter [kg/h] or 2 [kg/l] or 200 [°C]
! Note!
• The appropriate unit is taken from the following functions:
– UNIT MASS FLOW (0400)
– UNIT VOLUME FLOW (0402)
– UNIT CORRECTED VOLUME FLOW (0404)
– UNIT DENSITY (0420)
– UNIT REFERENCE DENSITY (0421)
– UNIT TEMPERATURE (0422)
(see Page 15 till Page 18).
• The appropriate unit is taken from the function UNIT MASS FLOW (0400),
(see Page 15).
• An example for selecting the STANDARD option in the function MEASURING
MODE (4004) can be found on Page 63.
" Caution!
It is very important to read and comply with the information in the function
VALUE 0_4 mA
(under “ " Caution”, Examples of parameter settings) on Page 61.
MEASURING
MODE
MODBUS register:
Data type:
Access:
4004
5807
Integer
read/write
For selecting the measuring mode for the current output.
Options:
0 = STANDARD
1 = SYMMETRY
2 = PULSATING FLOW
Factory setting: STANDARD
(continued on next page)
Function description
OUTPUTS → CURRENT OUTPUT 1 → CONFIGURATION