Siemens MindConnect Nano System Manual page 47

Data type
Bool
Byte (unsigned)
Word (unsigned)
DWord (unsigned)
Char (signed)
Int (signed)
DINT (signed)
Real
String
Offset
Variable types must have an offset. Offset is the starting byte number.
E.g. DW4 (a double word starting from byte 4)
String
Length
Data type in
bytes
STRING[n]
or n+2
STRING
Data type
STRING[2]
STRING[55]
You must enclose your character string in single quotation marks.
The following example shows the byte order when specifying the datatype STRING[4] with the
output value 'AB'.
47
Length
1 bit
1 byte
2 bytes
4 bytes
1 byte
2 bytes
4 bytes
4 bytes
1- 254 bytes
Format
ASCII character of any length. n specifies the length of the character string. A
maximum length of 254 characters is permitted. If no length is specified, the
default setting is 254 characters.
Examples of format used
'AB'
'The character string can consist of up to 55 characters'
4.2 Overview of S7 protocol for MindConnect Nano
Date range
True to False
0 to 255
0 to 65.535
0 to 4294967295
−128 to 127
−32768 to 32767
−2147483648 to 2147483647
+/-1,18e-38 to +/-3.40e+38
Configuring protocols
MindConnect Nano
System Manual 7/2023