Table of Contents
Advertisement
STATus
Note
Condition
Register
Chapter 6
The STATus subsystem communicates with the SCPI defined Operation and
Questionable Data status register sets. Each is comprised of a Condition register, a
set of Positive and Negative Transition Filter registers, an Event register, and an
Enable register. Condition registers allow you to view the current real-time states of
their status signal inputs (signal states are not latched). The Positive and Negative
Transition Filter registers allow you to control the polarity of change from the
Condition registers that will set Event register bits. Event registers contain latched
representations of signal transition events from their Condition register. Querying an
Event register reads and then clears its contents, making it ready to record further
event transitions from its Condition register. Enable registers are used to select which
signals from an Event register will be logically ORed together to form a summary bit
in the Status Byte Summary register. Setting a bit to one in an Enable register enables
the corresponding bit from its Event register.
For a complete discussion See "Using the Status System" on page 95.
Positive/Negative
Transition Filter
=1
Bit 0
=1
=1
Bit 1
=1
=1
Bit 14
=1
=1
Bit 15
=1
Figure 6-4. General Status Register Organization
Event
Enable
Register
Register
latch
latch
latch
latch
HP E1415 Command Reference
Logical
OR
Summary Bit to
Status Byte
267
Advertisement
Table of Contents
