Manual

Remote Control Commands and Queries
WM-RCM-E Rev D ISSUED: February 2005 223
STATUS
*SRE
Command/Query
DESCRIPTION
The *SRE command sets the Service Request Enable register
(SRE). This command allows you to specify which summary
message bit or bits in the STB register will generate a service
request. Refer to the table on page 225 for an overview of the
available summary messages.
A summary message bit is enabled by writing a ‘1’ into the
corresponding bit location. Conversely, writing a ‘0’ into a given bit
location prevents the associated event from generating a service
request (SRQ). Clearing the SRE register disables SRQ interrupts.
The *SRE? query returns a value that, when converted to a binary
number, represents the bit settings of the SRE register. Note that
bit 6 (MSS) cannot be set and its returned value is always zero.
COMMAND SYNTAX
*SRE <value>
<value> : = 0 to 255
QUERY SYNTAX
*SRE?
RESPONSE FORMAT
*SRE <value>
EXAMPLE (GPIB) The following instruction allows an SRQ to be generated as soon as
the MAV summary bit (bit 4, i.e. decimal 16) or the INB summary bit
(bit 0, i.e. decimal 1) in the STB register, or both, are set. Summing
these two values yields the SRE mask 16+1 = 17.
CMD$=“*SRE 17”: CALL IBWRT(SCOPE%,CMD$)