2020-12-09 15:26:38 [错误] 打开端口(COM2,9600)失败!
2020-12-09 15:27:09 [错误] 打开端口(COM2,9600)失败!
2020-12-09 15:27:20 [错误] 打开端口(COM2,9600)失败!
2020-12-09 15:27:26 [错误] 打开端口(COM2,9600)失败!
2020-12-09 15:27:39 [错误] 打开端口(COM2,9600)失败!
2020-12-09 15:27:53 [错误] 打开端口(COM2,9600)失败!
2020-12-09 15:28:52 [错误] 打开端口(COM2,9600)失败!