Siemens MindConnect Nano System Manual page 69

Coil/ Register numbers
10001-19999
30001-39999
40001-49999
Coil / register numbers can be considered as location names since they do not appear in the
configuration. The Data Addresses (Start Address) are used in the configuration.
Data Types:
Industrial IoT data types:
Data type Length
BOOLEAN 1 bit
INT 4 bytes
LONG 8 bytes
DOUBLE 8 bytes
STRING 1 - 255 bytes
Modbus data types:
Data type
char
unsigned char
short
unsigned short
long
unsigned long
float
double
ascii-text
Examples:
69
Data addresses Function type
0 to 65535 2
0 to 65535 4
0 to 65535 3
Data range
True
−2147483648
−9223372036854775808
-9.9999999999999999999999999999999999999E+125
Length
8 bits
8 bits
16 bits
16 bits
32 bits
32 bits
32 bits
64 bits
8 bits / char
4.5 Overview of Modbus RTU protocol for MindConnect Nano
Table name
Read Inputs
Read Input Registers
Read Holding Registers
Data type number
1
2
3
4
5
6
7
8
9
Configuring protocols
MindConnect Nano
System Manual 7/2023