reading Ext. status indirectly from VLT

Maybe stupid question, but..

I need to read external status from Danfoss vlt, which is connected to S7/300 via profibus.

I have done my own VLT controll FB.
Area of reading is determined by giving VLT address at FB input field.
With two first row, I can read actual reference and status from double word (example PED256).
But I need to read also word PEW 260, indirectly.
How should I call that word at FB?

L PED [#address]
T #From_VLT

L #From_VLT
T #Status_value

L #From_VLT
SRD 16
T #Status_word

L #Status_word
L 2#110000011011000
UW

L L#0
>I

= #VLT_fault

..Not enough coffee in My blood..

I quess there's some fancy way to do this with pointer or something,
but I think this will solve my problem:

L #address //peripherial address 256
+I
SLD 3
T #pew_3_tmp


L PED [#pew_3_tmp]
T #Ext_w

This way I managed to read ext.status word from VLT address 256.