Siemens SIMATIC NET CP 1243-1 DNP3, Руководство по настройке

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Configuration
3.20 Configuring data points
Configuration - DNP3
124
Configuration Manual, 11/2018, C79000-G8976-C508-01
Set limit value 'low' / Set limit value 'high'
Requirements for the function
● Configuration of the threshold trigger for this data point
● PLC tag in the bit memory operand area or data area
The analog value data point must be linked to a PLC tag in the memory or data area
(data block).
For PLC tags for analog input modules (input operand area) limit value configuration is
not possible. With these analog values the limit values of the following table are used
automatically.
The configuration of limit values is pointless for measured values that have already been
preprocessed on the CPU.
Function
In these two input boxes, you can set a limit value in the direction of the start of the
measuring range or in the direction of the end of the measuring range.
You can also evaluate the limit values, for example as the start or end of the measuring
range.
Configuration of the limit value
The limit value is configured as a whole decimal number. The range of values is based on
the range of values of the raw value of analog input modules.
Please note: The entry of the value 0 (zero) is interpreted as a deactivated limit value.
Range Value of the 16-bit PLC variable * Module output [mA] Measuring
range [%]
Decimal Hexadecimal 0 .. 20
(unipolar)
-20 .. +20
(bipolar)
4 .. 20
(life zero)
Overflow 32767 7FFF > 23.515 > 23.515 > 22.810 > 117.593
Overrange 32511
...
27649
7EFF
...
6C01
23.515
...
20.001
23.515
...
20.001
22.810
...
20.001
117.593
...
100.004
Nominal range
(unipolar / life zero)
27648
...
0
6C00
...
0000
20
...
0
20
...
4
100
...
0
Nominal range (bipolar) 27648 ...
0
... -27648
6C00 ...
0000
... 9400
20 ...
0
... -20
100 ...
0
... -100
Underrange
(unipolar / life zero)
-1
...
-4864
FFFF
...
ED00
-0.001
...
-3.518
3.999
...
1.185
-0.004
...
-17.59
Underrange (bipolar) -27649
...
-32512
93FF
...
8100
-20.001
...
-23.516
-100.004
...
-117.593
Undershoot / wire break -32768 8000 < -3.518 < 1.185 < -17.593