Mitsubishi Electric ME-RTU Bedienungsanleitung Seite 311

DATA POINTS LIST
4.5 DEFINITION OF ANALOG INPUT POINT LIST
List all addressable points. Points that do not exist (for example, because an option is not installed)
shall be omitted from the table.
Analog Input points list:
Default
Class
Point
Assigned
Name
Index
to Events
(1, 2, 3 or
none)
0 16-bit AI 0 2
1 16-bit AI 1 2
2 2
3 2
4 (Note) 32-bit AI 0 2
5 32-bit AI 1 2
6 32-bit AI 2 2
7 32-bit AI 3 2
NOTE Point index for 32-bit AI starts with the number which equals the number of 16-bit AIs.
The minimum and maximum transmitted values are the lowest and highest values that the outstation
will report in DNP analog input objects. These values are integers if the outstation transmits only inte-
gers. If the outstation is capable of transmitting both integers and floating-point, then integer and
floating-point values are required for the minimums and maximums.
For example, a pressure sensor is able to measure 0 to 500 kPa. The outstation provides a linear conver-
sion of the sensor's output signal to integers in the range of 0 to 25000 or floating-point values of 0 to
500.000. The sensor and outstation are used in an application where the maximum possible pressure is
380 kPa. For this input, the minimum transmitted value would be stated as 0 / 0.0 and the maximum
transmitted value would be stated as 19000 / 380.000.
The scaling information for each point specifies how data transmitted in integer variations (16 bit and
32 bit) is converted to engineering units when received by the Master (i.e. scaled according to the
equation: scaled value = multiplier * raw + offset). Scaling is not applied to Floating point variations
since they are already transmitted in engineering units.
Resolution is the smallest change that may be detected in the value due to quantization errors and is
given in the units shown in the previous column. This parameter does not represent the accuracy of the
measurement.
ME-RTU Remote Terminal Unit
Fixed, list shown in table below
Configurable (current list may be shown in table below)
Other, explain_____________________
Transmitted Value
Minimum Maximum
-32768 +32767
-32768 +32767
-32768 +32767
-32768 +32767
-2147483648 +2147483647
-2147483648 +2147483647
-2147483648 +2147483647
-2147483648 +2147483647
DEFINITION OF ANALOG INPUT POINT LIST
Scaling
Units
Multiplier Offset
Resolution Description
1 Buffered Memory 9600
1 Buffered Memory 9601
1 Buffered Memory 9602
1 Buffered Memory 9603
More points can be
added – up to 16-bit
AI 511
Buffered Memory
1
10368
Buffered Memory
1
10370
Buffered Memory
1
10372
Buffered Memory
1
10374
More points can be
added – up to 32-bit
AI 255
A - 57