Siemens SIMATIC S7-1200 Reference Manual page 21

Basic instructions
Attempt assignment of a VARIANT to a
reference
(AssignmentAttempt):
With "AssignmentAttempt", you attempt to
✔
assign a VARIANT tag to a reference tag. The
data type of a reference tag is specified at the
time of the declaration, the data type of a
VARIANT tag is determined during runtime.
ARRAY DB
✔ ✔
Read from ARRAY data block
✔ ✔
Write to ARRAY data block
✔ ✔
Read from ARRAY data block in load memory
✔ ✔
Write to ARRAY data block in load memory
Variant
✔ ✔
Read out VARIANT tag value
✔ ✔
Write VARIANT tag value
✔
Get number of ARRAY elements
ARRAY [*]
✔ ✔
Read out ARRAY low limit
✔ ✔
Read out ARRAY high limit
A5E33284667-AA
Extended instructions
Description
Technology
STL
LAD/FBD
(not S7-1200)
?= AssignmentAttempt
ReadFromArrayDB
WriteToArrayDB
ReadFromArrayDBL
WriteToArrayDBL
VariantGet
VariantPut
CountOfElements
LOWER_BOUND
UPPER_BOUND
Communication
SCL
?=
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