Some tag disconnects when connecting a different device with different modbus device ID

Hello Everyone,

Need your help on how can I fix the problem of colliding data for tags from different devices. I have a single modbus network wherein I will be connecting PV inverters and Power meters, I connected the PV inverter first with a modbus device ID of 1 and all of the mapped tags are working great. However when I connected a Power meter with modbus device ID of 15, 2 tags from the inverter suddenly disconnected while all of the tags in the Power meter is working properly. I am confident the the mapping are right and its working when connected alone. Please Help

Here are the inverter tags when the power meter is not connected

you can see that the above tags for Power meter is not yet updating.

and then above are the tags for Power meter and then below happens

Inverter device ID is 1 the address for the Load Power=1.HR198, Utility Power=1.HR203, Data Type Integer, Function Code 3 Holding Registers

Power meter device ID is 15, Data Type Float, Function Code 4 Input Register