Information
be enabled to cause the request, add up the decimal value for those events and supply that value
to the *SRE command.
The power up value of the Service Request Enable Register is zero, which means no Service
Requests are Enabled
.
2.9.5 STANDARD EVENT STATUS ‘EVENT’ REGISTER
See the READ STANDARD EVENT STATUS ‘EVENT’ REGISTER COMMAND (*ESR?). The
Standard Event Status Register has seven bits that indicate status and errors for the power supply
and the interface.
The response message will be a binary weighted number from 0 to 255. Zero is returned if there are
no errors or events. The contents of the Standard Event Status Register will be cleared to zeroes
after the *ESR? Command is executed.
The bit assignments for this register are:
BIT
NUMBER
DECIMAL
VALUE
BIT
SYMBOL
DESCRIPTION
0 1 OPC Operation complete
1 2 0 Not used.
2 4 QYE Query Error
3 8 DDE Device Dependant Error, Fault Shutdown
4 16 EXE Execution Error
5 32 CME Command Error
6 64 0 Not used
7 128 PON Power On. Set when power is switched on.
Table 2. The Standard Event Status Register
2.9.5.1 THE STANDARD EVENT STATUS ‘ENABLE’ REGISTER
See the SET STANDARD EVENT STATUS ‘ENABLE’ REGISTER COMMAND (*ESE).
The STANDARD EVENT STATUS ‘ENABLE’ REGISTER is a mirror of the STANDARD EVENT
STATUS ‘EVENT’ REGISTER.
If any bit is set in the Standard Event Status Event Register and enabled in the Standard Event
Status Enable Register, the event will propagate to the Status Byte Register as a Standard Event
Summary. By writing a binary weighted value to the Standard Event Status Enable Register, the bits
in the Standard Event Status Event Register may be individually enabled so only selected events
will cause a service request.
The power-up default is all zeroes in the enable register. This means no status or errors will be sent
to the Status Byte Register. However, even if no bits are enabled, the contents of the Standard
Event Status Register may always be read with the *ESR? query.
The contents of the Standard Event Enable Register may be read by sending:
*ESE?
The response will be a bit weighted number whose bits correspond to Table 2