Installation Manual

38
6. RS-232 Command
6-1. RS-232 command introduction
6-1-1. RS-232 command：
Command format：
This unit uses high-level language commands with a CR (0DH) and LF (0AH) as
the end of the command.
The system would interpret and execute the command only after these two
characters are received. After the unit execute the command, it would send a
response string to the computer. The response string is as follows：
= > CR LF：Command executed successfully ? > CR LF：Command error, not
accepted ! > CR LF：Command correct but execution error (e.g. parameters out
of range).
If the command needs any information from the unit, the unit would send the
information back to the computer (with CR and LF) and then send the response
string to the computer.
6-1-2. RS-232 Command format：
This unit supports the following command format.
There should always be a CR (0DH) and a LF (0AH) appended to the command
while sending commands to this unit.
Command
Function
Command
Function
POWER 1
To enable power output
VINV?
Show voltage of SD
POWER 0
To stop power output
IINV?
Show current of SD
*RST
Recovery default setting
VGRID?
Show voltage of grid
FRQ?
Show frequency value
VBAT?
Show voltage of battery
PINV?
Show power output
Table 27. RS-232 command table
Note：
Under parallel connection (more than 1 unit), RS232 command will only take
effect when RS232 cable is connected to Master unit. The connection please
refer to Figure25.