11
Data Type:
16 bits Integer
Step-3:
Set the communication parameters as per your requirement. (See example settings)
MODBUS
Register
Address
Parameter
Example settings
100
MODBUS ID
10 (Modbus ID=10)
101
Baud rate
2 (Baud Rate = 19200)
102
Parity
2 (Parity = Even)
103
Stop bits
2 (Stop Bit = 2)
104
Temperature Unit 0 (
o
C)
105
Save
1 (Save)
Table No: 7.2 – Modbus communication parameter configuration
Notes:
i)
To save the communication parameters, write 1 in register 105 else the settings
will not be saved.
ii)
Please note that writing single register is not allowed. All the registers are to be
written in one MODBUS write command.
Step-4
: After all the parameters are set in MODBUS Master, write the same to the sensor.
The sensor will stop communication and restart again with modified parameters.
Step-5
: Connect to sensor using the modified MODBUS communication parameters in the
MODBUS Master that is set in Step-3. The Solar Irradiance transducer will start
communicating.
Step-6
: Configured communication parameters can be verified by reading the
communication MODBUS registers (100 to 104) of the sensor.