Condition Registers; Event Registers - Keithley 2750 User Manual

11-18 Status Structure

Condition registers

As Figure 11-1
a condition register. A condition register is a real-time, read-only register that constantly
updates to reflect the present operating conditions of the instrument. For example, while
the Model 2750 is in the idle state, bit B10 (Idle) of the Operation Condition Register will
be set. When the instrument is taken out of idle, bit B10 clears.
The commands to read the condition registers are listed in
ing registers, see
Table 11-3
Condition register commands
STATus:OPERation:CONDition?
STATus:MEASurement:CONDition? Read Measurement Condition Register.
STATus:QUEStionable:CONDition? Read Questionable Condition Register.

Event registers

As Figure 11-1
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 register. *CLS resets all four event
registers.
The commands to read the event registers are listed in
registers, see
Table 11-4
Event register commands
*ESR?
STATus:OPERation:[:EVENt]?
STATus:MEASurement:[:EVENt]?
STATus:QUEStionable:[:EVENt]?
Note: Power-up and *CLS resets all bits of all event registers to 0. STATus:PRESet has no effect.
shows, each status register set (except the Standard Event Register set) has
"Reading registers," page
Command
shows, each status register set has an event register. When an event occurs,
"Reading registers," page
Command
Model 2750 Multimeter/Switch System User's Manual
Table
11-6.
Description
Read Operation Condition Register.
Table
11-6.
Description
Read Standard Event Status Register.
Read Operation Event Register.
Read Measurement Event Register.
Read Questionable Event Register.
11-3. For details on read-
11-4. For details on reading