Detailed Explanation of RS-485 Network Communication in Siemens PLC
RS-485 Network The PPI, MPI, and PROFIBUS-DP protocols supported by the S7-200 system are typically based on RS-485 electrical networks as their hardware foundation. The RS-485 serial communication standard employs balanced signal transmission, also known as differential mode. This balanced transmission method effectively suppresses interference during transmission. Balanced transmission uses a pair of wires to … Read more