在 BeckHoff 与 DataLogic Matrix 220 的 Profinet 状态机调试里,最耗时的一步通常是读懂 FB_TYP_151_Scanner_Datalogic2D_V1:它负责触发扫描、等待结果、拼接数据、失败重试和诊断报错,全部挤在一个功能块里。
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