*ESR

Description

This command queries the Standard Event Status Register. For more information about the ESR structure refer to Registers.

The register is automatically cleared when read.

Syntax	Response
`*ESR?`	<`numeric`>

Response value	description
<`numeric`>	value of the register in range from `0` to `255`

Bit value	code	description
Bit 0 - 1	`Operation complete`	Is set after an Operation Complete Command command, when all pending operations have finished.
Bit 1 - 2	`Request control`	Not used for the actual measurement device, because RAW socket does not support service requests.
Bit 2 - 4	`Query error`	Is set, when a query error occurs.
Bit 3 - 8	`Device dependent error`	Is set, when a device dependent error occurs.
Bit 4 - 16	`Execution error`	Is set, when an error occurs while executing a command.
Bit 5 - 32	`Command error`	Is set, when a given command is not valid.
Bit 6 - 64	`User Request`	Not used for the actual measurement device, because RAW socket does not support service requests.
Bit 7 - 128	`Power On`	Is set, when the device detects and off to on transition in its power supply.

var visaSession = new TcpipSocket(VISA_RESOURCENAME);
visaSession.RawIO.Write("*ESR?\n");
Console.WriteLine(visaSession.RawIO.ReadString());

response = visaSession.query('*ESR?\n')
print(response)