Xantrex Technology XTR 850 Watt - Manual (Page 149)

Status Byte
975-0200-01-01 5-27
5
Message Available (MAV)
This bit is TRUE whenever the power supply is ready to accept a request
by the Digital Programming Interface to output data bytes. This message
is FALSE when the output queue is empty.
Standard Event Status Summary (ESB)
This bit is TRUE when a bit is set in the Standard Event Status Register.
Master Summary Status (MSS)
This is caused by one of the following:
• Status Byte bit 0 AND Service Request Enable Register bit 0
• Status Byte bit 1 AND Service Request Enable Register bit 1
• Status Byte bit 2 AND Service Request Enable Register bit 2
• Status Byte bit 3 AND Service Request Enable Register bit 3
• Status Byte bit 4 AND Service Request Enable Register bit 4
• Status Byte bit 5 AND Service Request Enable Register bit 5
• Status Byte bit 7 AND Service Request Enable Register bit 7.
Request Service (RQS)
RQS is TRUE if the Service Request Enable Register has a bit set and
there is a corresponding bit within the Status Byte.
Operation Status Register Summary (OSR)
This bit is TRUE when a bit in the Operation Event Status Register is set
and its corresponding bit in the Operation Status Enable Register is set.
Service Request Enable Register
The Service Request Enable Register allows you to select the reasons for
the power supply to issue a service request. The Service Request Enable
Register allows you to select which summary messages in the Status Byte
Register may cause service requests.
To clear the Service Request Enable Register send *SRE 0. A cleared
register does not allow status information to generate a service request.