Remote Control Reference
4-19
In addition, an event register is a read-only register that can generate defined conditions from
the power supply. Bits in an event register are under a locked status. Once an even bit is set,
the following status changes will be ignored. Bits in an event register are automatically
cleared by a query, such as
*ESR?
,
STAT:QUES:EVEN?
or
*CLS
. But sending
*RST
or
device clear won’t clear bits in event registers. Querying an event register will return a decimal
value which conforms to the binary-weighted sum of all bits set in the register.
On the other hand, an enable register can define which bits in the corresponding even register
are ORed logically to form a single summary bit. Enable registers is able to read and write.
When querying an enable register, it won’t be cleared. Using
*CLS
can’t clear enable
registers, but it will clear the bits in the event registers. To enable bits in an enable register,
you have to write a decimal value which conforms to the binary-weighted sum of the bits that
you prefer enable in the register.
