基于python的snap7封装的对于西门子200SMART的通讯

可直接读取PLC的I，Q，M，V 可写入PLC的I，Q，M，V 包含B，W，D等寄存器的读取写入 以Q区读写为例： a = c.WriteData('Q', 0.0, 1) print(a) a = c.ReadData('Q', 0.0) print(a) a = c.WriteData('QB', 0, 2) print(a) a = c.ReadData('QB', 0) print(a) a = c.WriteData('QW', 0, 258) print(a) a = c.ReadData('QW', 0) print(a) a = c.WriteData('QD', 0, 65538) print(a) a = c.ReadData('QD', 0) print(a) 根据返回值可判断当前错误状态