Har bestilt ein modbus master til ein Siemens energimåler (for varmtvann levert av sameie). Blir spennande å sjå om eg kan bruke denne til å lese ut data derifrå og.
Bumping this old topic
So I bought the USB to MBUS slave, the same as was used earlier in this thread. Everything worked fine for about a month and then it stopped updating. Did some diagnostics and it seems my USB to MBUS slave is dead, or so I think. When I measure voltage between mbus lines it sits about 24V (as it should) but when I connect it to the slave and measure on the connector the measurement is 2-3V. I do not see any burnt components or smell anything.
Can someone verify that the mbus should be 24V when connected or do the voltage drop ehn connected? I do not remember if that was the case but I think it was 24V even when it was connected.
Someone else got the same fault as I did or did I just recieve a bad USB to MBUS module?
My module: USB To MBUS Slave Module, MBUS Master-slave Communication Debug Bus Monitor NEW | eBay