ia2

Use when the user is doing PLC programming or industrial-automation engineering work via the IA2 stack — IEC 61131-3 source (ST / LD / FBD / SFC), Modbus TCP/RTU or EtherCAT device wiring, runtime debugging (force / pause / step), or deploying programs to edge controllers. The CLI binary is `cs`. Trigger words include "ia2", "cs CLI", "ironplc", "iec 61131", "structured text", ".st file", "ladder logic", "function block", "modbus", "rtu", "ethercat", "scan loop", "VAR RETAIN", "tasks.toml", "iomap", "PLC", "edge runtime", "PROGRAM", "FUNCTION_BLOCK", "TON / TOF / R_TRIG". Do NOT trigger this skill for general embedded firmware, generic web backends, or non-PLC industrial protocols (OPC UA, MQTT, BACnet — those are out of scope today).