2022-05-30 16:30:11 [错误] 打开端口(COM1,9600)失败!
2022-05-30 19:52:30 [错误] 打开端口(COM1,9600)失败!
2022-05-30 21:15:47 [错误] 打开端口(COM1,9600)失败!
2022-05-30 21:15:49 [错误] 打开端口(COM1,9600)失败!