Technical data

6 IEEE-488.2 Common Commands
32 U2751A Programmer’s Reference Guide
Remarks
• The following table lists the bit definitions for the Standard Event
register.
• Use the <enable_value> parameter to specify which bits will be
enabled. The specified decimal value 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 4 (decimal value = 16), and bit 5
(decimal value = 32), the corresponding decimal value would be 52 (4 +
16 + 32).
• The clear status (*CLS) command will not clear the enable register but
it clears all the bits in the event register.
Bit number Decimal value Definition
0 Operation Complete 1 All commands prior to and including *OPC have been
executed.
1 Not Used 2 Always zero.
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 (an error in the –400 range has been
generated).
3 Device Error 8 A self-test or device error occurred (an error in the –300 range
or any positive error has been generated). For a complete
listing of the error messages, refer to Chapter 7, “Error
Messages” on page 47.
4 Execution Error 16 An execution error occurred (an error in the –200 range has
been generated).
5 Command Error 32 A command syntax error occurred (an error in the –100 range
has been generated).
6 Not Used 64 Always zero.
7 Power On 128 Power has been turned off and on since the last time the
event register was read or cleared.