2022-05-31 18:21:39 [错误] 打开端口(COM1,9600)失败!
2022-05-31 18:44:21 [错误] 打开端口(COM1,9600)失败!
2022-05-31 18:44:32 [错误] 打开端口(COM1,9600)失败!
2022-05-31 18:44:53 [错误] 打开端口(COM1,9600)失败!
2022-05-31 18:46:37 [错误] 打开端口(COM1,9600)失败!