How I can disable the node Address of 140CPU434 (12A) when installing with 140NOM21200 for 2 Modbus Plus port conectivity, because both cannot have the same node address? Has any one used these cards in this way?

 

CPU MB+ port can't be disabled. The address is given by the rotary switch located on the back-connector side.

Select different address for CPU and for NOM card, this will avoid duplicate addresses.