*ESE
*ESE
Syntax
*ESE <enable_val>
*ESE?
Description
This command enables bits in the enable register for the Standard Event Register group. The selected bits are then reported to bit 5 of the Status Byte Register.
For more information on the Status System for the instrument, see Status System Introduction.
Parameters
Name Type Range of Values Default Value <enable_val> Numeric The decimal value equal to the binary-weighted sum of the bits in the register (see table below). This is a required parameter.
Remarks
- The following table lists the bit definitions for the Standard Event Register.
Bit # Bit Name Decimal Value Definition 0 Operation Complete 1 All commands prior to and including *OPC have been executed. 1 Not Used Not Used 0 is returned. 2 Query Error 4 The instrument tried to read the output buffer but it was empty. Or, a new command line was received before a previous query has been read. Or, both the input and output buffers are full. 3 Device Error 8 A device-specific error has been generated. For a complete listing of the error messages, see Error Messages. 4 Execution Error 16 An execution error occurred. These error codes are in the range -100 to -199. 5 Command Error 32 A command error occurred. These error codes are in the range -200 to -299.
6 Not Used Not Used 0 is returned. 7 Power On 128 Power has been turned off and on since the last time the event register was read or cleared.
- Use the <enable_val> parameter to specify which bits will be enabled. The decimal value specified corresponds to the binary-weighted sum of the bits you wish to enable in the register. For example, to enable bit 2 (decimal value = 4), bit 3 (decimal value = 8), and bit 7 (decimal value = 128), the corresponding decimal value would be 140 (4 + 8 + 128).
- The *CLS (clear status) command will not clear the enable register but it does clear all bits in the event register.
Return Format
The query reads the enable register and returns a decimal value that corresponds to the binary-weighted sum of all bits set in the register. For example, if bit 3 (decimal value = 8) and bit 7 (decimal value = 128) are enabled, the query will return "+136".
Examples
The following command enables bit 4 (decimal value = 16) in the enable register. If an execution error occurs, this condition will be reported to the Status Byte Register (bit 4 will be set high).
*ESE 16
The following query returns which bits are enabled in the register.
*ESE?
Typical Response: +16