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
Read/write access
Recommendation: Symbolic programming.
✔
✔
Read data in little endian format
READ_LITTLE
✔
✔
Write data in little endian format
WRITE_LITTLE
✔
✔
Read data in big endian format
READ_BIG
✔
✔
Write data in big endian format
WRITE_BIG
✔
✔
Read memory address
PEEK
✔
✔
Read memory bit
PEEK_BOOL
✔
✔
Write memory address
POKE
✔
✔
Write memory bit
POKE_BOOL
✔
✔
Write memory area
POKE_BLK
Legacy
Recommendation: Symbolic programming
✔
✔
✔
Move block
BLKMOV
✔
✔
✔
Move block not interruptible
UBLKMOV
✔
✔
✔
Fill block
FILL