谢谢三楼回复。485线只要一接上就出现这个情况,PLC什么也没有发啊,用串口转485也是一样的,串口助手还没启动,一连上485就这样,请问这是怎么回事啊?
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3knl 发布的帖子
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RE: Openmv4plus用485扩展板与PLC通信
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RE: Openmv4plus用485扩展板与PLC通信
Traceback (most recent call last): File "<stdin>", line 11, in <module> Exception: IDE interrupt MicroPython: v1.13-r69 OpenMV: v3.9.3 HAL: v1.9.0 BOARD: OPENMV4P-STM32H743 Type "help()" for more information. >>> GOT REQUEST: b'\x00'
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Openmv4plus用485扩展板与PLC通信
与PLC通信,运行标准Modbus_rtu 从机示例程序,一连接上485就退出,显示“IndexError:bytes out of range”,是怎么回事?