Sre - Agilent Technologies U2300A Series Programming Manual

6 IEEE-488 Common Command

*SRE

Syntax
*SRE <enable_value>
This command enables bits in the enable register for the Status Byte
Register group. Once enabled, the corresponding bits may generate a
Request for Service (RQS) in the Status Byte. This RQS event may
generate a "call back" to your application as a type of asynchronous
interrupt.
*SRE?
The query command reads the enable register and returns a decimal value
which corresponds to the binary- weighted sum of all bits set in the
register. For example, if bit 3 (decimal value = 8) and bit 7 (decimal value
= 128) are enabled, the query command will return "+136".
Parameters
Name
<enable_value>
Remarks
• The following table lists the bit definitions for the Status Byte Register.
Bit Number
0 Not used
1 Not used
2 Error Queue
3 Not used
4 Message Available
46
Type Range of Values
Numeric A decimal value which corresponds to
the binary-weighted sum of the bits in
the register. Refer to the table below.
Decimal Value
Not used
Not used
4
Not used
16
Definition
Always zero
Always zero
One or more errors have been stored in the Error Queue
Use the SYSTem:ERRor?
errors
Always zero
Data is available in the instrument's output buffer for
single SCPI query but not for continuous acquisition
output buffer
U2300A Series USB DAQ Programming Guide
Default Value
This is a required
parameter.
command to read and delete