Hi, I would like to know how we can connect PLCs to RS485 bus.For example we have 5 PLCS, 3 in separate location, and 2 in the same room. using RS232-RS485 at one end of the PLC then the other end need to connection to RS485 bus, how can we accomplish this, what equipments we need to use?? Suppose the RS485 cable is 400m long, does it come with pre-made connector at both ends of the cable or we have to make them ourself. is RS485 bus just cable for connection PLCs together or we have to do some setup before the cable become a bus?? I don't know much about RS485, so please help me. Thank you
Mike
PS: looks like I lost the one just typed so if 2 posts of the same come up please forgive
Mike
PS: looks like I lost the one just typed so if 2 posts of the same come up please forgive