Siemens MindConnect Nano System Manual page 46

Configuring protocols
4.2 Overview of S7 protocol for MindConnect Nano
Area indicator
Area indicator
C
DB
DI
I
M
PI
PQ
Q
T
Area Number
S7 datapoint addresses must contain area number.
E.g.: DB10 (10. datablock)
Data Types
The following table shows the data types:
Data type Length Date range
BOOLEAN 1 bit
4 bytes −2147483648 to 2147483647
INT
8 bytes −9223372036854775808 to 9223372036854775807
LONG
DOUBLE 8 bytes
1-255
STRING
bytes
The following table shows the S7 data types:
S7 data types:
Data type
MindConnect Nano
System Manual 7/2023
Area types
Area types
Counter
Datablock
Instance Data
Process Input
Memory
Peripheral Input
Peripheral Output
Process Output
Timer
True to False
-9.9999999999999999999999999999999999999E+125 to
9.9999999999999999999999999999999999999E+125
Length
Description
Description
Reads Counter value of hardware.
Reads datablock value from hardware.
Reads data directly from hardware.
Reads Input value of Process image.
Reads Memory value of hardware.
Reads Input value directly from hardware.
Reads Output value directly from hardware.
Reads Input value of Process image.
Reads Timer value of hardware.
Date range
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