Kikusui KFM2151, Operation Manual

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KFM2151
Remote Control
4.6 Status Registers and Status Report Function
IEEE488.2 and SCPI registers are used for the status registers.
In each SCPI status register, there are sub registers, CONDition register, EVENt
register, ENABle register, PTRansition filter, and NTRansition filter.
Fig. 4-3 shows the SCPI status register structure. The character “+” represents the
logic sum of the register bits. Table 4-6 to Table 4-4 describe the bit number, bit
weight, and the meaning of each bit.
CONDition register
The transition of the CONDition register is automatic and reflects the condition of
the KFM2151 in real-time. Reading this register does not affect the contents.
EVENt register
The EVENt register bits are automatically set according to the changes in the
CONDition register. The rule varies depending on the positive and negative
transition filters (PTRansition and NTRansition). The EVENt register is reset when
it is read.
ENABle register
The ENABle register enables the reports to the summary bit or status bit of the event
bit.
Transition filter
Use the PTRansition (positive transition) filter to report events when the condition
changes from false to true.
Use the NTRansition (negative transition) filter to report events when the condition
changes from true to false.
If both the positive filter and the negative filter are set to true, events can be reported
each time the status changes.
If both of these filters are cleared, event reporting is disabled.