- can we interface isa100 with xbee?
- can we use ethernet shield to work in isa100 protocol?
The above are two very silly questions nether have anything to do with your problem. Your question should be can you interface isa100 or what ever elas with an arduino (or other processor). If you can then accepting data from a and sending it to b is of course somethinf the arduino can do.
But its not a case of ISA100 and some other protocol, it is ISA100 and the arduino.
Mark