Interface module with PROFINET interface V2.2 (RT/IRT) with cycle time starting at 250µs, PN connection method selectable via BusAdapter, 32 I/O modules; media redundancy (MRP); configuration control via PLC; module replacement during operation; start with gaps; supports PROFIenergy; firmware V1.0

上句中的：start with gaps 应该是啥东西