BNC 835-3 Programmer Manual - Manual (Page 16)

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835-3
Programmer’s Manual v1.0
Page 16 of 37
enable register does not affect it. The command :STATus:PRESet sets the Operation
Status Enable register and the Questionable Status Enable register to all 0’s.
Status Group Reporting
The state of certain BNC MODEL 835-3 hardware and operational events and conditions
can be determined by programming the status system. Three lower status groups
provide status information to the Summary Status Byte group. The Summary Status Byte
group is used to determine the general nature of an event or condition and the other
status groups are used to determine the specific nature of the event or condition.
Summary Status Byte Group
The Summary Status Byte group, consisting of the Summary Status Byte Enable register
and the Summary Status Byte, is used to determine the general nature of a 835-3 event
or condition. The bits in the Summary Status Byte provide the following:
Operation Status Group
The Operation Status group, consisting of the Operation Condition register, the Operation
Positive Transition register, the Operation Negative Transition register, the Operation
Event register and the Operation Event Enable register.
Standard Event Status Group
The Standard Event Status group, consisting of the Standard Event Status register (an
Event register) and the Standard Event Status Enable register, is used to determine the
specific event that set bit 5 of the Summary Status Byte.
The bits in the Standard Event Status register provide the following:
Bit
Description
0 Set to indicate that all pending 835-3 operations were completed following
execution of the “*OPC” command.
1 Request control
2 Set to indicate that a query error has occurred. Query errors have SCPI error
codes from –499 to –400.
3 Set to indicate that a device-dependent error has occurred. Device-dependent
errors have SCPI error codes from –399 to –300 and 1 to 32767.
4 Set to indicate that an execution error has occurred. Execution errors have SCPI
error codes from –299 to –200.
5 Set to indicate that a command error has occurred. Command errors have SCPI
error codes from –199 to –100.
6 User request
7 Power on
Standard Event Status Enable register
(ESE commands)