ABB FENA-01 Protocol Manual page 19

22 WORD ORDER
Selects in which order 16-bit registers of 32-bit parameters are
transferred.
0 = HILO: The first register contains the low order word and the
second register contains the high order word.
1 = LOHI: The first register contains the high order word and the
second register contains the low order word.
For each register (16-bit), the first byte contains the high order
byte and the second byte contains the low order byte.
23-26 Reserved
These parameters are unused by the FENA-01 when configured
for Modbus/TCP.
19
Drive configuration