System Commands 
  Copyright © Itech Electronic Co., Ltd.  47 
Returned value: 
<NR2> 
SYSTem:ERRor? 
This command is used to query the error information. 
Command syntax: 
SYSTem:ERRor? 
Parameter: 
None 
SYSTem:REMote 
This command is used to switch the AC load to remote control mode. In this 
mode, except Local button (pressing Local button to back to local mode), other 
keys are locked. 
Command syntax: 
SYSTem:REMote 
Parameter: 
None 
Query Syntax: 
None 
SYSTem:LOCal 
This command is used to switch the AC load to local operation mode. After this 
command is executed, all the keys on the panel are available. 
Command syntax: 
SYSTem:LOCal 
Parameter: 
None 
Query Syntax: 
None