Keithley 6220 Reference Manual page 320

11-18 Status Structure
Event registers
As Figure 11-1
event occurs, the appropriate event register bit sets to 1. The bit remains latched
to 1 until the register is reset. Reading an event register clears the bits of that reg-
ister. *CLS resets all four event registers.
The commands to read the event registers are listed in
reading registers, see
Table 11-5
Common and SCPI commands — event registers
*ESR?
STATus
:OPERation:[:EVENt]?
:MEASurement:[:EVENt]?
:QUEStionable:[:EVENt]?
Note: Power-up and *CLS resets all bits of all event registers to 0. STATus:PRESet has no
effect.
Event enable registers
As Figure 11-1
register bit is logically AND'ed (&) to a corresponding enable bit of an enable reg-
ister. Therefore, when an event bit is set and the corresponding enable bit is set
(as programmed by the user), the output (summary) of the register will set to 1,
which in turn sets the summary bit of the status byte register.
The commands to program and read the event enable registers are listed in
Table 11-6. For details on programming and reading registers, see
enable registers," on page 11-5
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shows, each status register set has an event register. When an
"Reading registers," on page
Command
shows, each status register set has an enable register. Each event
NOTE The bits of any enable register can be reset to 0 by
sending the 0 parameter value with the appropriate
enable command (i.e., STATus:OPERation:ENABle
0).
Return to
Model 6220/6221 Reference Manual
11-6.
Description
Read standard event status register.
STATus subsystem:
Read operation event register.
Read measurement event register.
Read questionable event register.
and "Reading registers," on page
Section 11 topics
Table 11-5. For details on
"Programming
11-6.