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 150

Remote Operation
Query the Status Byte
5-28
For example:
Sending *SRE 8 sets bit 3 of the Service Request Enable Register. This
will cause the Summary bit of the Questionable Status register (bit 3) in
the Status Byte to generate a service request message whenever it gets set.
(See "Status Byte" on page 5–26 for details.)
Command:
*SRE <Service-Request-Enable>, *SRE?
The SCPI equivalent for multichannel use:
[:]STATus[<channel>]:SREQuest:ENABle <status-enable>
[:]STATus[<channel>]:SREQuest:ENABle?
The status byte query will return the contents of the status byte register
and the MSS (Master Summary Status) message. The response is in the
format of a weighted decimal value representing the status byte register
and the MSS message (bit 6). Thus, the response to *STB? is identical to
the response to a serial poll except that the MSS message appears in bit 5
in place of the RQS message. (See "Status Byte" on page 5–26 for
details.)
Command:
*STB?
SCPI equivalent:
[:]STATus [<address>] :SBYTe[:EVENt]?
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