USER MANUAL – Z-SG
18
13.1.
Modbus function code supported
The following Modbus functions are supported:
Read Holding Register (function 3)
Read Input Registers (function 4)
Write Single Register (function 6)
Write Multiple registers (function 16)
13.2.
Modbus RTU Register table
In the following table this abbreviations are used:
“MS” = Most significant
“LS” = Less significant
“MSB” = Most significant Byte
“LSB” = Less significant Byte
“MSW” = Most significant Word (16 bits)
“LSW” = Less significant Word (16 bits)
“R” = Read only register
“RW” = Read and write register
“Unsigned 16 bit” = Unsigned 16 bits register
“Signed 16 bit” = 16 bit register with sign
“Float 32 bits” = Floating point single precision 32 bits (IEEE 754) register
“0x” = Hexadecimal Value
Generic parameters of Z-SG/Z-SG-L module are shown in the following table.
REGISTER
NAME
COMMENT
REGISTER
TYPE
R/W
DEFAULT
VALUE
MODBUS
ADDRESS
OFFSET
Machine id
Id_Code (Module ID)
unsigned
16 bit
R Flash
-
40001
0
