IEEE 488.2 and SCPI registers are used for status reports.
In each SCPI status register, there are the following sub registers: the CONDition register, the EVENt register, the ENABle register, the PTRansition filter, and the NTRansition filter.
Transitions of the CONDition register are automatic and reflect the condition of the PLZ-5W in real time. Reading this register does not affect its contents.
The EVENt register bits are automatically set according to the changes in the CONDition register. The rule for setting the bits varies depending on the positive and negative transition registers (PTRansition and NTRansition). The EVENt register is reset when it is read.
The ENABle register enables reports to the summary bit or status bit of the event bits.
If both the positive filter and negative filter are set to true, events can be reported each time the status changes.
If both filters are cleared, event reporting is disabled.