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Modbus RTU:
Modbus system only allows 1 manager. So we should only send orders to the unit by BMS or TFT Clever (if both
together there will be problems).
To avoid communication troubles, you should use two different ports: TFT trough Modbus RTU1 and BMS at Modbus
RTU2. See following diagram:
Using the TFT you can select different baud rate at each port (by default is 115.200). Before starting, be sure that port
RTU2 has the same speed as BMS.
If you want to send orders via Modbus you should:
1.
Lock the TFT to avoid that nobody is sending also orders to the Clever (only 1 manager). You can lock using the
same code of TFT or another different (then people won’t be able to unlock from TFT as they won’t know the
code).
2.
Stop the timer to avoid undesired ON Day/Night or OFF
3.
Manage the unit:
•
ON/OFF unit
•
Select Energy Saving Mode (Comfort/Medium/Eco)
•
Select the functioning mode:
•
If MANUAL, you can select:
•
Fan speed
•
Heating stages
•
Temperature SET
•
If AUTOMATIC, you only can change the temperature SET
If you want to stop managing the equipment from BMS and activate the Clever TFT to allow the people manage the unit,
then you only have to unlock the TFT (and stop giving Modbus orders).
If you have locked the controller using a different code than TFT, you have to unlock with the old TFT code (Known by
people that uses TFT).
