REMOTE INTERFACE 
381 
The Status Byte Register 
 
The Status Byte register consolidates the status 
events of all the status registers. The Status Byte 
register can be read with the *STB? query or a 
serial poll and can be cleared with the *CLS 
command.  
Clearing the events in any of the status registers 
will clear the corresponding bit in the Status Byte 
register.  
The Status byte enable register is cleared when the 
*SRE 0 command is used. 
The Status Byte Condition register is cleared when 
the *CLS command is used.  
Master Summary / 
Request Service 
There are error message(s) waiting 
in the error queue. 
The Questionable bit is set when 
an “enabled” questionable event 
has occurred. 
The Message Available bit is set 
when there is outstanding data in 
the Output Queue. Reading all 
messages in the output queue will 
clear the message available bit.