Why are broadcast telegramms not working anymore on the PCD3 or PCD2.M480

FAQ #100798

Symptom
When using firmware version 03B or 03C on either a PCD2.M480 or a PCD3.Mxxx0, the communication stops working after a sent broadcast. This only applies if the concerned PCD is acting as master on the S-Bus network.
This phenomenon occurs on S-Bus (Serial-S-Bus, Ether-S-Bus or Profi-S-Bus).

Reason
In firmware 03B and 03C an S-Bus broadcast telegram will block the communication interface until the next reboot of the PCD.

Solution
In order to resolve this problem, please update the firmware of your concerned PCD.