Power line communication reduce interference
Posted: Tue Apr 22, 2025 2:58 amUsing multiple PIC32CX2051MTG128+PL460 to establish Modbus communication through power lines, the customer requires a communication distance of 100~500 meters for stable communication (transmission and reception).
However, after experimental testing, it was found that there was a high probability (more than 50%) of data loss when the distance was over 20 meters.
The reason is presumably that the power lines between the power sockets are connected to other devices, causing interference, resulting in unstable communication. Please provide some solution.
Use the phy_plc_and_go example in the MPLAB® Harmony 3 Smart Energy G3 application examples and select the pic32cx_mtg_ek_pl460.X project for modification. This project can be used directly for testing.
https://github.com/Microchip-MPLAB-Harmony/smartenergy_g3_apps/tree/master/apps/phy_apps/phy_plc_and_go/firmware/pic32cx_mtg_ek_pl460.X
Currently, we are testing in labs with the same phase but different locations.
We are not considering the situation with different phases.
We are transmitting through power sockets on the power lines with the same phase and performing Modbus RTU communication.
However, the transmission on the power lines encounters interference, resulting in obvious data loss, with a probability of more than 50%.
Can you provide a solution or related information?
However, after experimental testing, it was found that there was a high probability (more than 50%) of data loss when the distance was over 20 meters.
The reason is presumably that the power lines between the power sockets are connected to other devices, causing interference, resulting in unstable communication. Please provide some solution.
Use the phy_plc_and_go example in the MPLAB® Harmony 3 Smart Energy G3 application examples and select the pic32cx_mtg_ek_pl460.X project for modification. This project can be used directly for testing.
https://github.com/Microchip-MPLAB-Harmony/smartenergy_g3_apps/tree/master/apps/phy_apps/phy_plc_and_go/firmware/pic32cx_mtg_ek_pl460.X
Currently, we are testing in labs with the same phase but different locations.
We are not considering the situation with different phases.
We are transmitting through power sockets on the power lines with the same phase and performing Modbus RTU communication.
However, the transmission on the power lines encounters interference, resulting in obvious data loss, with a probability of more than 50%.
Can you provide a solution or related information?