The new MBus-Master can now handle 250mA (supplying clients and TX path) and it is reliably possible to identify a 10mA swing on top of it (RX path) and convert it into a logic signal.
Switching the TX-path with 1kHz, 80% duty cycle:
Loading the TX-path with about 250mA (the current sink specifically built - see here - for this project is here in operation):
Finally, here are the most recent schematics of this new MBus-Master:
(The TX-test and the test for recognition of the 10mA swing have been done without the MCU at the moment.)
Loading the TX-path with about 250mA (the current sink specifically built - see here - for this project is here in operation):
Finally, here are the most recent schematics of this new MBus-Master: