Kikusui KHA1000, Руководство по эксплуатации, Страница: 243 / 274

KHA1000
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8.8 Status Registers and Status Report Function
The IEEE 488.2 register and SCPI register are used for status reports.
Each SCPI status register has the following subregisters: CONDition register,
EVENt register, ENABle register, PTRansition filter, and NTRansition filter.
Fig.8-4
shows the SCPI status register structure. “+” indicates the logical sum of
register bits. Table 8-6 to 8-9 provide a summary of bit numbers, bit weights, and
bit meanings.
CONDition register
The bits of the CONDition register are automatically set to indicate the current
status of this product. Reading this register does not affect the register data.
EVENt register
The bits of the EVENt register are automatically set according to the changes in the
CONDition register. The rules varies depending on the positive transition or
negative transition registers (PTRansition and NTRansition). Reading the EVENt
register clears the register data.
ENABle register
The ENABle register enables reports to the summary bit and status bit of event bits.
Transition filters
The PTRansition (positive transition) filter can be used to report an event when the
condition has changed from false to true.
The NTRansition (negative transition) filter can be used to report an event when the
state has changed from true to false.
If both positive and negative filters are set to true, an event can be reported every
time the status changes.
If both filters are released, event reporting is disabled.