System Commands 
  Copyright © Itech Electronic Co., Ltd.  14 
Parameters   
0~30 
Query syntax 
SYSTem:COMMunicate:GPIB:RDEVice:ADDRess? 
Returns 
0~30 
SYSTem:INTerface 
This command is used to switch the communication interface. IT7321 does not 
support GPIB interface. 
Command syntax 
SYSTem:INTerface <USB|RS232|LAN|GPIB> 
SYStem:PRESet 
System reservation command 
STATus:QUEStionable[:EVENt]? 
This command can be used to read the value in query event register.The power 
supply will return a decimal number corresponding to the binary weighted sum 
of each unit digit of register. These digits will be latched. After executing this 
command, the query event register will be cleared. 
 
Query syntax 
STATus:QUEStionable[:EVENt]? 
Parameters 
None 
Returns 
<NR1> 
Related commands 
  STATus:QUEStionable:ENABle   
STATus:QUEStionable:CONDition? 
This command is used to read the value of query condition register to get the 
power meter’s status, such as ocpeak/ ocrms/ ov/op/ot.