Status Reporting; Standard Event Status Register (Esr) - THORLABS ITC502 Operation Manual

3.8 Status reporting

3.8 Status reporting
The ITC5xx provides four 8 bit registers ESR, STB, ESE and SRE and three 16 bit
registers DEC, DEE and EDE to program various service request functions and
status reporting.
(Please refer to the IEEE488.2-1992 standard chapter 11)

3.8.1 Standard event status register (ESR)

The bits of this register mirror the following standard events:
Power on
User request
Command error
Execution error
Device error
Query error
Request control
Operation complete
The ESR can be read directly with the command
clears the ESR. The content of the ESR can not be set.
The bits are active high.
ITC500 / page 90
This event bit indicates, that an off to on transition has
occurred in the power supply. So it is high after switching
on the device for the first time.
(Not used)
A command error occurred.
An execution error occurred.
A device dependent error occurred.
A query error occurred.
(Not used)
Can be set with
"*OPC".
. This read command
"*ESR?"