命令名称：read_device_variable_information

命令ID：1057

命令号：54

命令操作：cmdOpRead

命令中事务个数：1

事务列表

    事务号：0

    事务中请求数据列表

条目类型	标识	掩码	整数	浮点	变量ID
cmdDataFlags	cmdDataItemFlg_indexNinfo	0	0	0	device_variable_code

    事务中响应数据列表

条目类型	标识	掩码	整数	浮点	变量ID
cmdDataReference	cmdDataItemFlg_None	0	0	0	response_code
cmdDataReference	cmdDataItemFlg_None	0	0	0	device_status
cmdDataFlags	cmdDataItemFlg_indexNinfo	0	0	0	device_variable_code
cmdDataReference	cmdDataItemFlg_None	0	0	0	LeveltransducerSerialNumber
cmdDataReference	cmdDataItemFlg_None	0	0	0	Level_Obj_unit
cmdDataReference	cmdDataItemFlg_None	0	0	0	Level_UpperRange_Obj_value_0
cmdDataReference	cmdDataItemFlg_None	0	0	0	Level_LowerRange_Obj_value_0
cmdDataReference	cmdDataItemFlg_None	0	0	0	Level_DampingTime
cmdDataReference	cmdDataItemFlg_None	0	0	0	Level_MinimumSpan_Obj_value_0
cmdDataReference	cmdDataItemFlg_None	0	0	0	Level_Classification
cmdDataReference	cmdDataItemFlg_None	0	0	0	LeveldeviceVariableFamilyCodes_Level
cmdDataReference	cmdDataItemFlg_None	0	0	0	LevelmainTaskDelayTimeMax