Product Manual
- 14 -
5.2. - MODBUS © protocol
Modbus RTU Frame Format:
Address code
1 BYTE
Slave device address
1-247
Function code
1 BYTE
Indicates the function codes
like read coils / inputs
Data code
4 BYTE
Starting address, high byte
Starting address, low byte
Number of registers, high byte
Number of registers, low byte
Error Check code
2 BYTE
Cyclical Redundancy Check
(
CRC )
：
MODBUS FUNCTIONS
Code:
Meaning:
Description:
FUNCTION 03
Reading of n Words
This function permits to read all
the electrical parameters of the
BJ194…series.
FUNCTION 06
Preset single Registers
Write value in to the relevant
register
www.energometrika.ru
ООО «Энергометрика»,
[email protected], тел.:+7(495)276-0510
