PLC Probe

Version 0.5 expands program analysis, improves variable editing, and makes more features available for free. • More in Free: Save unlimited CPUs and read PLC tag tables, including available system variables and global constants. Up to 10 simultaneous live tags remain free. • Program source with Pro: Read available SCL/STL source and supported LAD/FBD, GRAPH, and CEM structures with network comments and block interfaces. Jump directly to a network and navigate scrollable diagrams. • Source export with Pro: Export complete supported SCL blocks as .scl and supported LAD-only blocks as .s7dcl. Text and original XML exports remain available. Export requires readable source and the necessary metadata. • Better variable editing: Type-specific input for 28 scalar data types, including dates, times, durations, STRING, and WSTRING. Edit fractional seconds and raw values directly; incomplete input stays visible for correction. Pro writes recheck the target and input, then verify the result by reading it back. • Separate initial values: Read supported numeric, STRING, and WSTRING initial values in confirmed optimized S7-1500 DBs independently of current online values. • More hardware details: Expanded network and PROFINET identity information, plus Siemens reference data for recognized memory cards with Pro. Rated capacity stays separate from online memory usage. • Clearer diagnostics: Better separation of confirmed alarms and technical messages. Inspect available Safety data read-only on confirmed failsafe CPUs. • More reliable monitoring: Clearer handling of status startup, unchanged values, and stream failures; improvements to reconnects, live subscriptions, and typed variable history. • Smoother browsing: More efficient display of large DB structures and arrays, more readable long block names, and improved tables, detail views, and navigation on iPhone, iPad, and Mac.