S5 AWL Command Lookup
Search any S5 AWL instruction — get the S7 equivalent, SCL code, and migration notes instantly.
50 commands
FAQ
How many S5 AWL commands exist?
The SIMATIC S5 AWL (Anweisungsliste / Statement List) instruction set contains approximately 50 core commands covering bit logic (U, O, S, R, =), load/transfer (L, T), timers (SI, SE, SD, SS, SA), counters (ZV, ZR), arithmetic (+F, -F, +G), comparisons (!=F, ><F, >F, <F), jumps (SPA, SPB), block calls (BE, BEA, BEB), edge detection (FP, FN), and accumulator operations (TAK, ENT). Additional variants exist for indirect addressing and system-specific operations.
Which PLC languages are supported?
S5 AWL and S7 STL are statement list languages, while SCL (Structured Control Language) is a high-level language similar to Pascal/Structured Text. PLCcheck supports all three: S5-AWL, S7-STL, and SCL from TIA Portal. The format is detected automatically — just paste your code.
Which S5 commands have no direct S7 equivalent?
Several S5 commands have no direct S7-1500 equivalent: DO FW/DO DW (indirect addressing via flag/data word) must be rewritten using pointer addressing with AR1/AR2. ENT (accumulator stack shift) has no equivalent because the S7-1500 has only 2 accumulators instead of 4. S5 special function blocks like FB250/FB251 (analog I/O) are replaced by built-in S7 functions. DX blocks (extended data blocks) have no equivalent — use regular DBs. OB21/OB22 startup blocks map to OB100/OB102 in S7.
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