2 Function Matrix Device Functions Proline Promass 83 MODBUS RS485
8 Endress+Hauser
2.2 Illustration of the function descriptions
A0004827-en
Fig. 3 : Example for the description of a function
1 Name of the function
2 Number of the function (appears on the local display; is
not identical to the MODBUS RS485 register address)
3 Description of the function
4 Selection or entry options or display
5 Factory setting (the measuring device is delivered with this setting/selected option)
6 Information on communication via MODBUS RS485
– MODBUS RS485 register (information in decimal numerical format)
– Data type: float (length = 4 bytes), integer (length = 2 bytes), string (length = depends on function)
– Possible ways of accessing the function:
read = read access via function code 03, 04 or 23
write = write access via function code 06, 16 or 23
!
Note!
If a nonvolatile device parameter is modified via the MODBUS RS485 function codes 06, 16 or 23,
this change is saved in the EEPROM of the measuring device. The number of writes to the EEPROM
is technically restricted to a maximum of 1 million. Attention must be paid to this limit since, if
exceeded, it results in data loss and measuring device failure. For this reason, avoid constantly
writing nonvolatile device parameters via the MODBUS RS485!
2.3 Display lines on the local display
The local display is split into various display lines.
A0001253
Fig. 4 : Local display
1 Main line
2 Additional line
3Information line
The values are assigned to the individual lines in the USER INTERFACE block, see Page 33.
UNIT LENGTH
MODBUS register:
Data type:
Access:
0424
2125
Integer
read/write
For selecting the unit for displaying the length of the nominal diameter.
The unit zou select here is also valid for:
- Nominal diameter of sensor, see Function NOMINAL DIAMETER (6804).
Options:
Factory setting:
0 = MILLIMETER
1 = INCH
MILLIMETER
1 2
3
5
6
4
Esc
E
+
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1
2
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