Status Register Definitions
Elgar CW-P Series
A-2
Programming Manual
!
" #
$ %$
This bit is set when any error/event is entered in the System Error queue. It is
read using the SYSTem:ERRor? query.
& '
(
$ %$
Indicates a message is available in the GPIB output queue. This bit is cleared
after the GPIB output buffer is read.
)
*
*
(
This is a summary bit for the ESR. It is set when any of the ESR bits are set,
and cleared when the ESR is read.
+
,
- '
# #
If service requests are enabled (with the *SRE command), this bit represents the
RQS and will be sent in response to a serial poll, then cleared. If RQS is not
enabled, the bit represents the MSS bit and indicates the device has at least one
reason to request service. Although the device sends the MSS bit in response to
a status query (*STB?), it is not sent in response to a serial poll. It is not
considered part of the IEEE 488.1 Status Byte.
*
*
(
The ESR can be read by the *ESR? command. Reading this register, or using the
*CLS command will clear the ESR.
Bits in the ESR will be set only when the corresponding bit in the Standard Events
Status Enable register is set. Use the *ESE to set bits, and the *ESE? to read this
register. To configure the CW-P Series to generate SRQ's based on the ESR, both the
Standard Event Status Enable register and the Service Request Enable registers must
be programmed.
Bit
Hex Value Description
0
01
Operation Complete.
1
02
Request Control - Not used.
2
04
Query Error.
3
08
Device-Dependent Error.
4
10
Execution Error (e.g., range error).
5
20
Command Error (e.g., syntax error).
6
40
User Request - Not used.
7
80
Power On.
Summary of Contents for CW 1251P
Page 2: ......
