Modbus variables: import massive

[Domoticatorino]

Thank you very much Erwin,
I have seen that entries modbus are the folling:

"id", "internal_id", "device", "name", "active", "bus_write", "bus_address", "bus_datatype", "internal", "type", "value_delta","value_base","value_multiplier","value_bitmask","value_nan","value_conv","value_custom","units","address","address_scale","read_count","read_offset","read_swap","datatype","writable","write_only","write_multiple"

In json file has to be declared all of them or it is not necessary?

Thanks.