# Conditions to Monitor

:STATus Commands

- :STATus Subsystem
- Status Byte Registers
- Operation Status Registers
- Conditions to Monitor

This topic lists register bits that are associated with conditions that you want to monitor.

Conditions to Monitor Versus Relevant Registers
Condition | Status Name | Registers
--- | --- | ---
Acquisition limit test completion | ACQ | `:STATus:LTESt:EVENt? (bit 1)`
ACQ | `:STATus:OPERation:EVENt? (bit 9)`
Calibration completion | DONE | `:STATus:CALibration:EVENt? (bit 0)`
CAL | `:STATus:OPERation:EVENt? (bit 14)`
Infiniium 2026 transitioned from remote mode to local mode | LOCAL REG | `:STATus:LOCal:EVENt? (bit 0)`
LCL | `:STATus:USER:EVENt? (bit 0)`
LCL | `*STB? (bit 1)`
Limit test completion or failure. | LTEST | `:STATus:LTESt:EVENt? (bit 0)`
LTEST | `:STATus:OPERation:EVENt? (bit 8)`
Message displayed and placed in message queue | MSG | `:STATus:MESSage:EVENt? (bit 0)`
MSG | `*STB? (bit 2)`
Mask test completion or failure | MTEST | `:STATus:LTESt:EVENt? (bit 2)`
MTEST | `:STATus:OPERation:EVENt? (bit 10)`
Trigger has been received | TRG | `:STATus:TRIGger:EVENt? (bit 0)`
TRG | `*STB? (bit 0)`
An operation is complete | OPC | `*ESR? (bit 0)`
OPC | `*STB? (bit 5)`
Query error detected | QYE | `*ESR? (bit 2)`
QYE | `*STB? (bit 5)`
Device-dependent error detected | DDE | `*ESR? (bit 3)`
DDE | `*STB? (bit 5)`
Execution error detected | EXE | `*ESR? (bit 4)`
EXE | `*STB? (bit 5)`
Command error detected | CME | `*ESR? (bit 5)`
CME | `*STB? (bit 5)`
Off-to-on transition has occurred | PON | `*ESR? (bit 7)`
ESB | `*STB? (bit 5)`