命令名称：read_process_variables

命令ID：463C

命令号：128

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
cmdDataReference	cmdDataItemFlg_None	0	0	0	press_unit

    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
cmdDataReference	cmdDataItemFlg_None	0	0	0	input_ma
cmdDataReference	cmdDataItemFlg_None	0	0	0	input_percent
cmdDataReference	cmdDataItemFlg_None	0	0	0	set_point
cmdDataReference	cmdDataItemFlg_None	0	0	0	travel
cmdDataReference	cmdDataItemFlg_None	0	0	0	drive_signal
cmdDataReference	cmdDataItemFlg_None	0	0	0	temperature
cmdDataReference	cmdDataItemFlg_None	0	0	0	vtd_temperature
cmdDataReference	cmdDataItemFlg_None	0	0	0	po1
cmdDataReference	cmdDataItemFlg_None	0	0	0	po2
cmdDataReference	cmdDataItemFlg_None	0	0	0	ps
cmdDataReference	cmdDataItemFlg_None	0	0	0	pn
cmdDataReference	cmdDataItemFlg_None	0	0	0	position
cmdDataReference	cmdDataItemFlg_None	0	0	0	vtd_angle