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*SRE and *SRE?
*SRE <mask> specifies which bits of the Status Byte Register are enabled to
generate a service request . Event and summary bits are always set and cleared in
the Status Byte Register regardless of the enable mask. Mask is the sum of the
decimal weights of the bits to be enabled.
The query form returns the current enable mask.
Parameters
Parameter
Name
Parameter
Type
Range of
Values
Default
Units
mask numeric 0 through 255 none
A 1 in a bit position enables service request generation when the corresponding
Status Byte Register bit is set; a 0 disables it.
Comments
• Executable when initiated: Yes
• Coupling group: none
• *RST Condition: unaffected
• Power-On Condition: no bits are enabled
Example Enable service request on Message Available bit
*SRE 16 Enable request on MAV
*STB?
*STB? returns the value of the Status Byte Register. Bit 6 (decimal weight 64) is
set if a service request is pending. STB? should not be used to read the Status Byte
register if a service request is generated by a message available (MAV) condition.
Comments
• *STB? is a query. Thus, sending the command in response to a MAV condition
will generate Error -410 "Query interrupted".
• Executable when initiated: Yes
• Coupling group: none
• Related commands: *SRE
• *RST Condition: none
*SRE and *SRE?
IEEE-488.2 Common Commands Command Reference 3-33