Siemens SIMATIC S7-1200 CP 1243-8 IRC Operating Instructions Manual page 138
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Configuration
4.18 Data points
Format (memory require-
ments)
Floating-point number (64
bits)
Block of data (1...64
bytes)
5)
This object group can be configured in the Data point editor of STEP 7 using the substitute object group 12.
1)
This object group can be configured in the Data point editor of STEP 7 using the substitute object group 20.
2)
This object group can be configured in the Data point editor of STEP 7 using the substitute object group 22.
3)
This object group can be configured in the Data point editor of STEP 7 using the substitute object group 41.
4)
With these data point types, contiguous memory areas up to a size of 64 bytes can be transferred. All S7 data types with
5)
a size between 1 and 64 bytes are compatible.
Substitute object groups (of the table footnotes
The initial data point types of the following object groups can be configured using the
substitute object groups listed above:
● 10 [2]
● 11 [1, 2]
● 21 [1, 2, 5, 6]
● 23 [1, 2, 5, 6]
● 40 [1, 2, 3]
● 42 [1, 2, 4, 5, 6, 7, 8]
To configure in the DNP3 CP, use the specified substitute object group.
Assign each data point on the master using the configurable data point index in STEP 7. The
data point of the DNP3 CP is then assigned to the corresponding data point on the master.
Example of configuring the data point Binary Output (10 [2])
The data point is configured as follows:
On the DNP3 CP as Binary Command (12 [1])
On the master as Binary Output (10 [2])
With the data point types Binary Output Event (11) and Analog Output Event (42), you also
need to enable mirroring back; refer to the next section.
Configuration of mirroring back for output events (object groups 11 and 42)
You first create the data point types Binary Output Event (object group 11) and Analog
Output Event (object group 42) as described above as data points of the object groups 12 or
41.
138
Data point type CP
DNP3 object
group
[Data point type TIM]
Analog Input
Analog Input Event
Analog Output
Analog Output
Event
4)
Octet String / Oc-
tet String Output
Octet String Event
5)
Direction
[variations]
30 [6]
in
32 [6, 8]
in
41 [4]
out
42 [6, 8]
out
110 [ - ]
in, out
111 [ - ]
in, out
,
,
,
)
1)
2)
3)
4)
Operating Instructions, 02/2018, C79000-G8976-C385-03
S7 data types
Operand area
LReal
Q, M, DB
LReal
Q, M, DB
LReal
Q, M, DB
LReal
Q, M, DB
DB
5)
DB
5)
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