PLC code and AI: making machine data accessible to technicians
June 22, 2026 · 5 min read · KobiKan team · Touch4IT
Most failure questions can be answered from the PLC program — which input turns off which output, which condition raises which alarm, why a cycle stopped. The problem: PLC code is read by 5% of people in the plant.
What AI can read today
Siemens S7 (SCL, LAD, FBD), Rockwell Studio 5000, Beckhoff TwinCAT, Mitsubishi GX Works. Exported programs are imported and linked to the I/O list and HMI structures.
Technicians can then ask: "Why did the cycle stop at station 4?" and get an answer with the specific input, current state, and the last record of when this happened.
Security and IT
PLC code never leaves the plant. In an on-prem deployment it is indexed locally and the AI accesses it over the internal network. For IT/OT teams that means the integration doesn't violate network segmentation.
Read-only access is the default. AI never writes to a PLC. A human stays in the loop for every change.
Real-world impact
A junior technician resolves a failure on a station they've never seen, because the PLC told them what's happening — without calling the PLC programmer.
The PLC programmer finally gets to focus on development, not answering the same question for the tenth time.