Siemens S7 Address Helper
Address
S7 is big-endian: MW10 = MB10 (high byte) + MB11 (low byte), so M10.0 is bit 8 of MW10 and M11.0 is bit 0. Optimized DBs in S7-1200/1500 have no absolute addresses.
Overlap check
Related
Knowledge· 6
- S7 communication (S7comm, ISO-on-TCP port 102)Industrial networks
- SIMATIC controller families: S7-300, S7-400, S7-1200, S7-1500 and ET 200PLC
- How HMIs talk to PLCs — drivers, polling and addressingHMI
- Bits, bytes, words and integer typesData representation
- Byte and word order (ABCD, BADC, CDAB, DCBA)Data representation