IEEE-488 Command Reference
Copyright © Itech Electronic Co., Ltd. 28
Event Status register when the electronic load has completed all pending
operations. (See *ESE for the bit configuration of the Standard Event Status
registers.) Pending operations are complete when:
All commands sent before *OPC have been executed. This includes
overlapped commands. Most commands are sequential and are completed
before the next command is executed. Overlapped commands are
executed in parallel with other commands. Commands that affect trigger
actions are overlapped with subsequent commands sent to the electronic
load. The *OPC commandprovides notification that all overlapped
commands have been completed.
All triggered actions are completed and the trigger system returns to the
Idle state.
*OPC does not prevent processing of subsequent commands but Bit 0 will not
be set until all pending operations are completed. The query causes the
interface to place an ASCII "1" in the Output Queue when all pending
operations are completed.
Command Syntax
*OPC
Parameters
None
Query Syntax
*OPC?
Returned Parameters
<NR1>
Related Commands
*TRIG
*WAI
*RCL
This command restores the electronic load to a state that was previously stored
in memory with a *SAV command to the specified location. All states are
recalled with the following exceptions:
CAL:STATe is set to OFF
The trigger system is set to the Idle state by an implied ABORt command (this
cancels any uncompleted trigger actions)
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