1257 User Manual
EADS North America Defense
SCPI Command Basics 5-15
Test and Services, Inc.
©
2001
*ESE <ESE value>
where the “<ESE value>” is an integer numeric value in the range
from 0 through 255.
*ESE? Query
This query reads the value presently programmed for the
Standard
Event Status Enable Register
. This reads the value as
programmed by the “*ESE” command.
*ESR? Query
This query reads the value of
the Standard Event Status Register
.
Each bit of this register indicates a true/false status condition.
When the bit is set, the condition is TRUE; when the bit is cleared,
the condition is FALSE. The bit assignments are defined by the
IEEE-488.2 specification. The bit assignments are described in the
text following
Figure 5-1
.
The bits of the
Standard Event Status Register
are cleared at
power-on, except for bit 7, which is set. As conditions become true,
the corresponding bit in the register are set. These bits remain set
until:
•
The *ESR? query is executed
•
The *CLS command is executed
The reply to the *ESR? query is a numeric integer value in the
range “0" to “255".
*SRE Command
The *SRE command sets the value of
Service Request Enable
Register
. The value of this register is logically ANDed with the
contents of the Status Byte If any bits of this AND operation are
set, bit 6 of the Status Byte is set. Bit 6 is also known as the
Master Status Summary bit. Consult the text immediately following
Figure 5-1
for a description of the MSS bit and the Service
Request Enable register.
The command has the format:
*SRE <SRE value>
where the “<SRE value>” is an integer numeric value in the range
0 to 255. The value of bit 6 of this register is ignored, since it does
not make sense to enable an interrupt when an interrupt is
generated.
