The connection to the UMG604 via Modbus TCP is done by reading the holding register 03. This means that the RUT956 has to read this register as a Modbus slave and remembers/saves this value. The data logger would then also query the RUT956 via Modbus RTU on the holding register 03 in order to get the same value from it.
Below are the schematic representations of the TCP and RTU network structures. As I already said, a data logger in the RTU network would be a master and therefore equivalent to a data logger in the TCP network as a client
The implementation of this connection is already possible as described with the above-mentioned component.
Now the question is whether the Teltonika can do this too?
It can carry out the respective function as master/slave/client/server. But can he also serve as a converter in between?