Table 160: Data Format And Function Code; Table 161: Modbus Registers; Modbus/Tcp Tables - WAGO 852-1305 Manual

294 Appendix
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10.4

MODBUS/TCP Tables

10.4.1 Data Format and Function Code
MODBUS TCP supports different types of data formats for reading. The most
important 4 types are:

Table 160: Data Format and Function Code

Data access type
Bit access
Word access
(16-bit access)
10.4.2 MODBUS Registers
The MODBUS base address of the industrial managed switch is 1001 (decimal)
for function code 4.

Table 161: MODBUS Registers

Register
Address
System Information
0x0000
0x0001
0x1020
0x0040
Physical Discrete Inputs
Internal Bits or Physical
Physical Input Registers
Physical Output
Data Rep. Description
Type
1 word HEX Vendor ID = 0x0b04
16 words ASCII Vendor Name = "WAGO"
Word 0 Hi byte = 'W'
Word 0 Lo byte = 'A'
Word 1 Hi byte = 'G'
Word 1 Lo byte = 'O'
Word 2 Hi byte = '\0'
16 words ASCII Product Name = "INS-8528"
Word 0 Hi byte = 'I'
Word 0 Lo byte = 'N'
Word 1 Hi byte = 'S'
Word 1 Lo byte = '-'
Word 2 Hi byte = '8'
Word 2 Lo byte = '5'
Word 3 Hi byte = '2'
Word 3 Lo byte = '8'
Word 4 Hi byte = '\0'
Word 4 Lo byte = '\0'
7 words Product Serial Number
Ex: Serial No=A000000000001
WAGO-ETHERNET-Zubehör 852
852-1305 8/4-Port 100BASE-T/1000BASE-SX/LX
Function Function name
code
2 Read Discrete
Inputs
1 Read Coils
4 Read Input
Registers
3 Read Holding
Registers
Note
Not supported.
Not supported.
Not supported.
Manual
1.1.0