I will develop a siemens s7 plc and sinumerik cnc data acquisition dll

Turn your Siemens machines into a live data source.

S7Direct is a lightweight, self-contained Windows DLL that reads data directly from Siemens S7 PLCs and SINUMERIK CNC controls - no extra licenses, no VC++ redistributable. Copy and run.

WHAT IT READS

• Siemens S7-300, S7-400 and S7-1200 (classic) PLCs over native S7comm, port 102
• - SINUMERIK 840D / 840Dsl / 828D CNC: axis position, feed rate, spindle speed, active program, operating mode and more
• - Device identity: order code (MLFB), serial number, firmware
• - Any tag by absolute address (DB, M, I, Q, T, C) as bit, int, real or string

WHY S7Direct

• Read-only and safe: it cannot write, stop or change your PLC/CNC - it only reads
• - Self-contained: depends only on Windows itself, nothing to install
• - Easy to integrate: call it from C#/.NET via P/Invoke (sample included), or any language that can load a DLL
• - Clean, documented API with a ready-to-use example

TYPICAL USES

Production and OEE dashboards, downtime tracking, SCADA/MES feeds, logging to SQL, machine monitoring.

Please message me before ordering with your PLC/CNC models, network setup and which values you want to read, so I can confirm the right scope for you.