Status Reporting; Event Condition Registers - ILX Lightwave LDX-36000 Series User Manual

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C H A P T E R

Status Reporting

This section contains information that is relevant for understanding instrument
error and status reporting. It also contains information regarding the use of the
instrument status for generating interrupts for interrupt driven programs or
subroutines. Understanding the Operation Complete definition for the instrument
is useful for program synchronization. The Output Off Register section also
contains information on configuring the conditions which force the laser current
source output off.

Event Condition Registers

In addition to the required IEEE-488.2 status reporting structure, the LDX-36000
remote interface provides Event and Conditions Registers for laser controller
operations. The Event Registers are used to report events which occur during the
operation of the LDX-36000 Series High Power Laser Diode Current Source.
Events differ from conditions in that events signal an occurrence once, and are not
reset until the Event Register is queried or the LDX-36000 is powered off.
Conditions reflect the current state of the instrument, and therefore may change
many times during operation. Querying a Condition Register does not change its
contents.
Figure 4.6 shows the status reporting scheme of the LDX-36000 Series Current
Source. Each of the registers which may be accessed by a command or query
has the appropriate command or query written above or below the register
representation. For example, the Laser Condition Register may be queried via
the "LASer:COND?" query.
The condition or event registers are logically ANDed with their respective enable
registers. These bits are then logically ORed to form a summary message in the
status byte for that particular register.
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 LDX-36000 Series
R E M O T E O P E R A T I O N
Status Reporting