What is the difference between cables and communication cables and control cables?
RS485 has a much broader range of concepts, but usually the communication rate of RS485 rarely reaches DP so fast that its output impedance is typically 120 ohms, and the actual maximum non relay transmission distance is more than 1000 meters of the DP bus. RS485 cable line diameter range from 26AWG~18AWG, wiring mode can be crimping, welding, wiring, nose screws, anchor and so on.
The physical layer of the DP bus is the RS485, a special high-speed bus. The characteristic impedance of the SIEMENS DP cable is 150 ohms, which is of great importance for high-speed communications (over @10Mbps). DP cable conductor line diameter is 22AWG, with DP module crimping use. In low rate cases, the RS485 cable can be used instead.
