Just wanted to document how I got the new genset feature working using the old DSE890 MKI and an RS-485 connection in case it is of use to anyone else.
The DSE890 MK1 does not implement ModbusTCP, like the newer DSE890 MKII.
So I bought a Waveshare USB to RS485/422, Industrial Grade Isolated Converter
Plugged it into one of the CerboGX USB ports and wired the RS-485 connectors together with three core cabling.
I then logged into the DSE890 MKI web interface and under the Modbus tab in the “Modules Connection” option I added a RS485 slave with an ID of 10 and baud rate of 19200 (info from VenusOS 3.50~30 : RS485 control of DSE controllers - #4 by ptrenz) and the master being the USB port, as shown below:
And lo and behold, a “DSE genset controller” appeared in the Cerbo device list.
I then wired the Cerbo “Relay 1” between the “remote start” and ground on the DSE 4520 MKII (pins 14 and 1)
And on the Cerbo set the Relay 1 to be a “Connected genset helper relay”
Seems to be working so far, and data is being passed to the Cerbo:
Hope this helps someone!
