In the text (Aggregate Documentation 5.31.15, page=185) :
the Holding registers described as Read-Only registers, and
the Input Registers described as Read/Write registers.
In the Modbus protocol (see modbus.org specification)
this is quite the opposite :
Holding registers : Read/Write,
Input registers : Read only
My question is if the software treats the modbus registers in the way the manual describes,
or the way the modbus protocol defines them (so it is only a mistyping).