50
6.2 Communication Parameter Address
High byte: F00-F0D
：
Low byte:
00-FF
(1) The Definition of Communication Parameter Address The function code
number and parameter label is the representation rule of the parameter
address.
For example, to access F04.13, the access address of the parameter is
0xF40D
；
MODBUS communication includes read and write operations of function
parameters and some special register’s read and write operations. Special
register includes control register, set registers, state registers, and factory
information.
Function
code
group
Absolute address
Function
code
group Absolute address
Group F00
Group F02
Group F05
Group F07
Group F09
Group F0A
Group F0C
Group F01
Group F03
Group F06
Group F08
Group F0B
Group F0D
0x00
0x02
0x04
0x06
0x08
0x0A
0x0C
0x01
0x03
0x05
0x07
0x09
0x0B
0x0D
Note: Due to EEPROM is stored frequently , it will reduce the life of the
EEPROM, so some parameters don't need to store in the communication mode,
as long as change the RAM value, the absolute address in the table
corresponding to the parameter RAM address high post. To achieve this
function, as long as the absolute address regard address high post
Rs485 Communication protocol
Group F04
