Problem with communications between Twido PLC and Magelis (XBT GT 4330). Message on touch screen is: "No replay from PLC". I use a XBTZ978 cable. Is it a problem with the cable or with the address? Please help me!!
Make sure you have the communication parameters set correctly and that the settings are the same on the HMI and on the PLC (Baud, parity, stop bit...). Check also that the Modbus master protocol is selected on the panel.
If nothing works, update your firmware on your panel, make sure you use the newest version of the panel programming software.