Script to scan a PROFIBUS network for all online peripherals using pyprofibus

profibus_scan.py

# SPDX-License-Identifier: GPL-2.0-or-later
from pyprofibus import phy_serial
from pyprofibus import fdl
import pyprofibus


def main():
    phy = phy_serial.CpPhySerial("/dev/ttyUSB0")
    phy.setConfig(baudrate=phy_serial.CpPhy.BAUD_19200)
    phy.debug = 1
    xceiv = fdl.FdlTransceiver(phy)
    xceiv.setRXFilter(None)

    i = 3
    while True:
        print(f"Ping {i:3}...")
        fcb = fdl.FdlFCB()
        telegram = fdl.FdlTelegram_FdlStat_Req(da=i, sa=2)
        xceiv.send(fcb, telegram)
        i += 1

        try:
            ok, telegram = xceiv.poll(0.2)
            if ok and not not telegram:
                print(telegram)
            else:
                print("Nothing")
        except Exception as e:
            print(f"Error: {e}")

        if i == 126:
            break

    print("Done.")


if __name__ == "__main__":
    main()