VXI VM4016 user manual Esr?

VXI Technology, Inc.

	*ESR?
Purpose	Queries and clears the Standard Event Status Register
Type	IEEE 488.2 Common Command
Command Syntax	N/A
Command Parameters	N/A
*RST Value	N/A
Query Syntax	ESR?
Query Parameters	N/A
Query Response	Numeric ASCII value from 0 to 255
Description	The Event Status Register (ESR) query queries and clears the contents of the
	Standard Event Status Register. This register is used in conjunction with the ESE
	register to generate the Event Status Bit (ESB) in the Status Byte. The layout of the
	ESR is:
	Bit 0 - Operation Complete
	Bit 1 - Request Control
	Bit 2 - Query Error
	Bit 3 - Device Dependent Error
	Bit 4 - Execution Error
	Bit 5 - Command Error
	Bit 6 - User Request
	Bit 7 - Power On
	The Operation Complete bit is set when it receives an *OPC command.
	The Query Error bit is set when data is over-written in the output queue. This could
	occur if one query is followed by another without reading the data from the first
	query.
	The Execution Error bit is set when an execution error is detected. Errors that range
	from -200 to -299 are execution errors.
	The Command Error bit is set when a command error is detected. Errors that range
	from -100 to -199 are command errors.
	The Power On bit is set when the module is first powered on or after it receives a
	reset via the VXI Control Register. Once the bit is cleared (by executing the *ESR?
	command) it will remain cleared.
Examples	Command / Query	Response (Description)
	*ESR?	4
Related Commands	*ESE

54 VM4016 Command Dictionary