hi. If i need a 2 conditions of 888 (1) to be on in order to activate a process controlled by 888(2), before activating 888(3) when few conditions are satisfied. So there will be a total of 3 888 talking to each other. Should I use modbus for them to communicate or should i wire one of the output of 888(1) to input of 888(2) in order to have quick response? Thanks.