For more information about routing and reserving PXI triggers, refer to KnowledgeBase
3TJDOND8
Each chassis has one or more trigger buses, each with eight lines numbered 0 through 7 that
can be reserved and routed statically or dynamically. Static reservation
pre-allocates
a trigger
line to prevent its configuration by a user program. Dynamic reservation/routing/deallocation
is
on the fly
within a user program based on NI APIs such as NI-DAQmx. NI recommends
dynamic reservations and routing are used whenever possible. If static reservations are
required, static reservation of trigger lines can be implemented by the user in MAX through
the
Triggers
tab. PXI modules dynamically configured by programs such as NI-DAQmx will
not use reserved trigger lines. This prevents the instruments from double-driving the trigger
lines, possibly damaging devices in the chassis. In the default configuration, trigger lines on
each bus are independent. For example, if trigger line 3 is asserted on trigger bus 0, by default
it is not asserted automatically on any other trigger bus.
Complete the following steps to reserve these trigger lines in MAX.
1.
In the Configuration tree, click the PXI chassis branch to configure.
2.
In the lower right pane, click the
Triggers
tab.
3.
Select the trigger lines to statically reserve.
4.
Click the
Save
button.
PXIe-1083 User Guide
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© National Instruments
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