Write commands – CIRCUTOR CEM-M-RS-485 User Manual
Page 13
The unit will respond to us with the next frame:
Address
Function
No� of bytes
Serial no�
CRC
01
04
04
XXXX XXXX
CRC
Note: The values are shown in hexadecimal.
The number of requested logs must be the same as the size of the variable requested.
It is possible to read several consecutive addresses, if the request meets the correct format.
4�4�3�- WRITE COMMANDS
The
CEM M-RS485 supports integer type write functions: 0x01.
The unit's Modbus variables are specified in
Table 4
.
Example: Changing the Modbus address of peripheral 01 to the address
0x000A
.
We will send the following Modbus frame:
Address
Function
Initial log
Log no�
No� bytes
Data
CRC
01
10
03E8
0001
02
000A
CRC
The unit will respond to us with the next frame:
Address
Function
Initial log
Log no�
CRC
01
10
03E8
0001
CRC
Note: The values are shown in hexadecimal.
The number of logs to write must be the same as the size of the variable that is being
accessed.
It is possible to write several consecutive addresses, if the request meets the correct format.
13
Instruction Manual
CEM M-RS485