命令名称：read_device_variables

命令ID：1054

命令号：33

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_1
cmdDataFlags	cmdDataItemFlg_indexNinfo	0	0	0	device_variable_code_2
cmdDataFlags	cmdDataItemFlg_indexNinfo	0	0	0	device_variable_code_3
cmdDataFlags	cmdDataItemFlg_indexNinfo	0	0	0	device_variable_code_4

    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_1
cmdDataReference	cmdDataItemFlg_None	0	0	0	velocity_digital_unit
cmdDataReference	cmdDataItemFlg_None	0	0	0	velocity_digital_value
cmdDataFlags	cmdDataItemFlg_indexNinfo	0	0	0	device_variable_code_2
cmdDataReference	cmdDataItemFlg_None	0	0	0	velocity_digital_unit
cmdDataReference	cmdDataItemFlg_None	0	0	0	velocity_digital_value
cmdDataFlags	cmdDataItemFlg_indexNinfo	0	0	0	device_variable_code_3
cmdDataReference	cmdDataItemFlg_None	0	0	0	velocity_digital_unit
cmdDataReference	cmdDataItemFlg_None	0	0	0	velocity_digital_value
cmdDataFlags	cmdDataItemFlg_indexNinfo	0	0	0	device_variable_code_4
cmdDataReference	cmdDataItemFlg_None	0	0	0	velocity_digital_unit
cmdDataReference	cmdDataItemFlg_None	0	0	0	velocity_digital_value