Xantrex XTR6-110, XTR8-100, XTR12-70, XTR20-42, XTR33-25, XTR40-21, XTR60-14, XTR80-10.5, XTR100-8.5, XTR150-5.6, XTR300-2.8, XTR600-1.4 Operating Manual page 173

SCPI Error/Event Queue
It shall contain all the nodes from the root. The <SCPI program
mnemonic> contains the node in standard SCPI format. The short form
shall use uppercase characters while the additional characters for the long
form shall be in lowercase characters. Default nodes shall be surrounded
by square brackets ([ ]).
Command:
[:]SYSTem[<channel>]:HELP:HEADers?
For example:
:SYST1:HELP:HEAD?
Might return:
*IDN?/qonly/
*RST/nquery/
*TST?/qonly/
*OPC/nquery/
*OPC?/qonly/
*WAI/nquery/
*CLS/nquery/
*ESE
*ESR?/qonly/
*SRE
*SRE?/qonly/
5
*STB?/qonly/
*SAV
*RCL
*TRG/nquery/
*ADR
*HELP?/qonly/
*ERR?/qonly/
[:]SYSTem:PROTection[:MASK]
[:]SYSTem:ERRor[:NEXT]?/qonly/
[:]SYSTem:ERRor:CODE[:NEXT]?/qonly/
[:]SYSTem:ERRor:COUNt?/qonly/
Press any key to continue or ESC to quit...
...
975-0200-01-01 5-51