Software PLC with full IEC language suite
The 6AG1677-1DD00-4BB0: Onboard memory: 1 GB main RAM plus a 2 GB flash disk for program and data storage. Temperature range -40 to 70 °C means it survives unheated cabinets and hot panel environments. The two USB 2.0 high-speed ports let you plug in a memory stick or keyboard for local service. IRT (isochronous real-time) is listed as supported—this matters if you're syncing drives or fast I/O. Send cycles are adjustable down to 250 µs, giving deterministic update rates for motion coordination.