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我想用射像头测量距离，然后根据距离大小强制Y或者M
关于PLC： 如果要接到PLC，可以用IO口，也可以用串口。串口的话，OpenMV输出的是TTL串口。要看你的设备是RS485还是RS232，需要接相应的转换器。 OpenMV 的io是3.3v的ttl电平，如果想要开关量信号，需要外接光耦或者继电器。