I tested it on the MED9 with DQ500, it takes MDNORM values above 630 Nm, when I set it to 850, it's 850 aswell in the TCU
witch Vehicle, witch CAN-Bus-Version ?
The limit is CAN version based. It can differ between plattform or versions.
PQ-based CAN-Bus got the limit of 630Nm in all versions (upto V566)
Also looked into the files of V8 TDI, the scaling factors for all Can Messages in ecu are the same as they are in the V6 files. MDInorm is 1000 Nm instead of 620 Nm.
V8 and V6 are not PQ. They are PL but Audi A6 C6 (V241) is also limited to 630Nm on CAN.
Never take a look to RS6, but e.g. R10-Touareg should also use 1000Nm. Both are not PQ-based and may use there own DBC-Version, like the Bugatties too
All maps regarding to Botschaftslänge and Moment have the value 8, so are you really sure, that more than 630 Nm are not possible on that Can Bus generation without scaling new all can participans?
MO2_max_Mo is a 6bit value, see attachmend. Bit 7 and 8 is used for multiplexer-value.
On PQ-based CAN, the scaling factor is 10, so no chance to send more the 630Nm without chancing the factor.
It is possible to recale MO2_max_MO.
If you do on ECU, you chance the CAN Interface, witch is fix in DBC based on defintion.
If you chance this defintion, you need to chance the scaling on every controler, with reads this value from CAN.
Scaling factor is not communicated on CAN, so no "autoadjust", when you chance it in ECU application.