Siemens SINUMERIK Series

B3: Distributed systems - 840D sl only
2.2 NCU link
Extended Functions
92 Function Manual, 03/2013, 6FC5397-1BP40-3BA1
Memory structure
The data is arranged in the link variables memory as follows, with the data format limits
taken into account:
/LQNYDULDEOHVPHPRU\
,QGH[ 


0'01B00B6,=(2)B/,1.9$5B'$7$ 
%<7( %<7( :25' ':25'
':25' ':25'
5($/
Figure 2-8 Example: Structure of the link variables memory
Note
Memory structure
The data in the link variables memory is always arranged randomly and may therefore
appear different (although the data format limits will still be taken into account).
Access via a link variable must be programmed as follows, in accordance with the memory
structure defined:
Program code Description
$A_DLB[0] ; BYTE(1)
$A_DLB[1] ; BYTE(2)
$A_DLW[2] ; WORD
$A_DLD[4] ; DWORD(1)
$A_DLD[8] ; DWORD(2)
$A_DLD[12] ; DWORD(3)
$A_DLR[16] ; REAL