CIRCUTOR CEM-M-RS-485 - 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