Datapoint Types - Siemens CP 1243-1 Operating Instructions Manual

4.10.3

Datapoint types

Configure the user data to be transferred from the CPU that is referenced via PLC tags of
the CPU on the CP as data points.
The data point types supported by the CP along with the compatible S7 data types are listed
below for the various telecontrol protocols.
The direction relates to the direction of transfer:
● "in": Monitoring direction:
● "out": Control direction
Note
Effect of the change of arrays for data points
If an array is modified later, the data point must be recreated.
Data point types of the "TeleControl Basic" protocol
Table 4- 1 Supported data point types and compatible S7 data types
Format (memory requirements)
Bit
Byte
Integer with sign (16 bits)
Counter (16 bits)
Integer with sign (32 bits)
Counter (32 bits)
Floating-point number with sign (32
bits)
Floating-point number with sign (64
bits)
Data block (1 .. 64 bytes)
For the possible formats of the ARRAY data type, refer to the following section.
1)
Block of data (ARRAY)
With the ARRAY data type, contiguous memory areas up to a size of 64 bytes can be
transferred. The following S7 data types are compatible components of ARRAY:
● Byte, USInt (total of up to 64 per data block)
● Char (total of up to 64 per data block) - CP as of firmware version 2.1.77
CP 1243-1
Operating Instructions, 04/2017, C79000-G8976-C365-03
Data point type
Digital input
Digital output
Digital input
Digital output
Analog input
Analog output
Counter input
Analog input
Analog output
Counter input
Analog input
Analog output
Analog input
Analog output
Data
Data
Direction S7 data types
in Bool
in Bool
in Byte, Char, USInt
out Byte, Char, USInt
in Int
out Int
in Word, UInt
in DInt
out DInt
in UDInt, DWord
in Real
out Real
out LReal
out LReal
in / out ARRAY
1)
in / out ARRAY
1)
Configuration
4.10 Data points
Operand area
I, Q, M, DB
Q, M, DB
I, Q, M, DB
Q, M, DB
I, Q, M, DB
Q, M, DB
I, Q, M, DB
Q, M, DB
Q, M, DB
I, Q, M, DB
Q, M, DB
Q, M, DB
Q, M, DB
Q, M, DB
DB
DB
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