Siemens S7-1200 - Page 49

Configuration and operation
4.6 Datapoint types
CP 1243-7 LTE
Operating Instructions, 01/2015, C79000-G8976-C381-01
49
Supported data point types of the CP
Table 4- 1 Supported data point types and compatible S7 data types
Format (memory re-
quirements)
Data point type
S7 data types
Address area
Bit
Digital input
BOOL
I, Q, M, DB
Digital output BOOL I, Q, M, DB
Byte
Digital input
BYTE, CHAR
I, Q, M, DB
Digital output
BYTE, CHAR
I, Q, M, DB
Integer with sign (16 bits)
Analog input
INT
I, Q, M, DB
Analog output
INT
I, Q, M, DB
Counter (16 bits)
Counter input
WORD
I, Q, M, DB
Integer with sign (32 bits)
Analog input
DINT
I, Q, M, DB
Analog output
DINT
I, Q, M, DB
Counter (32 bits)
Counter input
DWORD, UDINT
I, Q, M, DB
Floating-point number
with sign (32 bits)
Analog input
REAL
Q, M, DB
Analog output
REAL
Q, M, DB
Floating-point number
with sign (64 bits)
Analog input
LREAL
Q, M, DB
Analog output
LREAL
Q, M, DB
Block of data
(1 .. 64 bytes)
Data
ARRAY
1)
DB
Data
ARRAY
1)
DB
1)
For the possible formats of the ARRAY data type, refer to the following section.
Block of data (ARRAY)
With the ARRAY data type, contiguous memory areas up to a size of 64 bytes can be
transferred.
Compatible components of ARRAY are the following uniform S7 data types with a size
between 1 and 32 bytes:
● BYTE, CHAR (in total up to 64 times per block of data)
● INT (in total up to 32 times per block of data)
● DINT, UDINT (in total up to 16 times per block of data)
If the array is modified later, the data point must be recreated.
Time stamp in UTC format
Time stamps are transferred in UTC format (48 bits) and contain the time difference in
milliseconds since 01.01.1970.