Siemens Simatic S7-1500

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Extended instructions
Basic instructions
Communication
Technology
S7-300
S7-400
S7-1200 S7-1500
Description LAD/FBD
STL
(not S7-1200)
SCL
✔ ✔ ✔
Create ones complement double integer (32
bit)
S7-1500: Conversion also done implicitly
nn INVD nn
✔
✔
✔
Negate integer (16 bit)
nn
NEGI
nn
✔
✔
✔
Negate integer (32 bit)
nn
NEGD
nn
✔
✔
✔
Negate floating-point number
nn
NEGR
nn
✔
✔
✔
Switch bytes in the right word of accumulator 1
nn
CAW
nn
✔
✔
✔
Switch all bytes in accumulator 1
nn
CAD
nn
Variant instructions
✔
✔
Convert VARIANT to DB_ANY
VARIANT_TO_DB_ANY
✔
✔
Convert DB_ANY to VARIANT
DB_ANY_TO_VARIANT
Legacy
Recommendation: Symbolic programming
✔ ✔ ✔ ✔
Convert the integer to a floating
-point number
scaled in physical units between a low limit and
high limit (scaling).
SCALE SCALE