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PLC Reference Library

Technical reference documentation for PLC programming and migration.

S5 AWL Command Reference

Complete reference of all 40 S5 AWL instructions with S7 equivalents, syntax, and examples.

S7 SCL Reference

SCL syntax, timers, counters, math operators, data types, and best practices.

S5→S7 Address Mapping

I/O, markers, data blocks, periphery, and counter format conversion tables.

Timer Conversion

S5 KT timer format to IEC timers (TON/TOF/TP). Time base reference and BCD encoding.

IEC 61131-3

Programming languages, data types, and standard function blocks.

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