delta-A2-E 0x603F

ethercat upload -p 0 -t uint16 0x603F 00 .... read error register but only 16bit register (normally) .... on delta asd-a2-e drive 603F register is 32bit register .... but if try to read with:obtain these reply on terminal ...
but on a2-e manual at pag.130 is clear thar 603F must be 32 register 16(error code)+16(addictional info) register so I aspect to see something like 9000-0500h ... but can obtain only 0x9000 36864 (hex and dec value of same 16 bit register)

I appreciate any suggest

In a2-e manual, page 79 it is clearly written that object 603Fh is unsigned 16 

these is perfect but in manual talk about addictional register .... without specifying which register it is... or at least I missed it.... see below:

 

Tryto get the drive's idea of register length.

just try ... seems 16bit only not 16 + 16