S7-300
S7-400
S7-1200
S7-1500
Description LAD/FBD
STL
(not S7-1200)
SCL
Check data type of a VARIANT tag
Scan data type of an ARRAY element of a
VARIANT tag
Compare data type for EQUAL with the data
type of a tag
Compare data type of an ARRAY element for
EQUAL with the data type of a tag
With a tag of type DB_ANY, compare the data
type of an indirectly addressed DB with a data
type for EQUAL.
Identify any data block with DB_ANY. You then
have the option of
accessing a data block that
is not yet available during programming.
Compare data type for UNEQUAL with the data
type of a tag
Compare data type of an ARRAY element for
UNEQUAL with the data type of a tag