There are two manipulators fixed on a static frame, one manipulator installed on a mobile vehicle in our lab. Our plan is to use 3 PCs tocontrol each of them, in order to make each of them work on its own. What kind of network should we choose to connect them and carry out the communication between each other? Because we don't know the data transfer speed in a LAN, we are not sure about the choice of the network. Can anybody give an advice?