Specifications

<Note> *: The OPC bit at the register cannot be set through *ESE command. It must use *OPC command.
But the OPC bit can only be cleared by executing *ESE command.
*ESR?
Meaning and Type
Event Status Register Device Status
Description
This query reads the Standard Event Status Event register. Reads the register and clears it. The bit
configuration of this register is the same as the Standard Event Status Enable register (*ESE).
Query Syntax
Parameters
Returned Parameters
Related Commands
*ESR?
(None)
<NR1> (Register decimal value)
*CLS *ESE *ESE? *OPC
*IDN?
Identification Query
Meaning and Type
Identification System Interface
Description
This query requests the power supply to identify itself. It returns a string composed of five fields separated
by commas.
Query Syntax
Returned Parameters
Example
Related Commands
*IDN?
<CRD>
Field Information
AMREL, Manufacturer
xxxxx-xx, Model number
0,
CF:92.CT,
FV:x.xx Revision levels of firmware
AMREL,PD-MC1,0,CF:92.1CT,FV2.47
(None)
*OPC
Meaning and Type
Operation Complete Device Status
Description
This command causes the interface to set the OPC bit (bit 0) of the Standard Event Status register when the
power supply has completed all pending operations. (See *ESE for the bit configuration of the Standard
Event Status register.) Pending operations are complete when:
x 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 output voltage,
current or state, relays, and trigger actions are overlapped with subsequent commands sent to the
power supply. The *OPC command provides notification that all overlapped commands have
been completed.
x Any change in the output level caused by previous commands has been completed (completion of
settling time, relay bounce, etc.)
x All triggered actions are completed.
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