System Variables Of The Link Memory - Siemens SINUMERIK 840D sl Function Manual

2.8.2

System variables of the link memory

The following system variables are available for accessing the link memory:
Legend:
r: Read
w: Write
R: Read with implicit preprocessing stop
W: Write with implicit preprocessing stop
PP: Part program
SA: Synchronized action
SW: Software version
Name
$A_DLB[i]
$A_DLW[i]
$A_DLD[i]
$A_DLR[i]
$A_LINK_TRANS_RATE
Note
Use of index i is described in detail in "Link variables".
Extended Functions
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
Several Operator Panels on Several NCUs, Distributed Systems (B3)
Type/SW Description/values
INT/5 Addresses a byte in the link memory/0 to
$MN_MM_SIZEOF_LINKVAR_DATA-1
INT/5 Addresses a data word in the link memory/0
to $MN_MM_SIZEOF_LINKVAR_DATA-2
INT/5 Addresses a data double word in the link
memory/0 to
$MN_MM_SIZEOF_LINKVAR_DATA-4
REAL/5 Addresses a REAL value in the link memory/0
to $MN_MM_SIZEOF_LINKVAR_DATA-8
INT/5 For synchronized actions: Number of bytes
that can still be transferred in the current
interpolation cycle via link communication./-
2147483648 to 2147483647
2.8 Cross-NCU user communication, link variables
Index
Counters
Counters
Counters
Counters
PP SA
access access
R/w r/w
R/w r/w
R/w r/w
R/w r/w
r
167