Configuration Of The Data Point Index - Siemens CP 1243-1 Operating Instructions Manual

Configuration
4.10 Data points
4.10.4

Configuration of the data point index

Configuration of the data point index
Below you will find the rules for configuring the data point index.
Data point index with the TeleControl Basic protocol
Within a CP, the indexes of the data point classes must comply with the following rules:
● Input
The index of an input data point must be unique throughout all data point types (digital
inputs, analog inputs etc.).
● Output
The index of an output data point must be unique throughout all data point types (digital
inputs, analog inputs etc.).
Note
Index for data points with inter-station communication
Note that for inter-station communication with a CP in another S7 station, the indexes of the
two corresponding data points (data point pair) must be identical on the sending and
receiving CP.
For information on the configuration, refer to the section Partner configuration with
TeleControl Basic data points. (Page 112).
Data point index with the DNP3 protocol
On a CP, data point indexes must be unique within each of the following object groups:
● Binary Input / Binary Input Event
● Binary Output / Binary Command
● Counter / Counter Event
● Analog Input / Analog Input Event
● Analog Output
● Octet String / Octet String Event
Indexes of two data points in different object groups can be identical.
Data point index with the IEC protocol
The data point indexes must be unique in a CP.
Data point indexes assigned twice are indicated as errors in the consistency check and
prevent the project being saved.
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Operating Instructions, 04/2017, C79000-G8976-C365-03
CP 1243-1