Siemens SIMATIC S7 System Manual page 369

Example: Add to Table instruction
LAD
S7-200 SMART
System Manual, V2.3, 07/2017, A5E03822230-AF
On the first scan only, load the maximum table
length 6 to VW200.
When I0.0 makes a transition to 1, add a third data
value (from VW100) to the table at VW200. Two
data entries were previously stored in the table
which can hold up to six entries.
Program instructions
7.16 Table
STL
Network 1
LD SM0.1
MOVW +6, VW200
Network 2
LD I0.0
ATT VW100, VW200
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