VXi VT1529A/B 사용자 설명서
VT1422A Command Reference 393
TRIGger
TRIGger
The TRIGger command subsystem controls the behavior of the trigger system once
it is initiated (see INITiate command subsystem).
it is initiated (see INITiate command subsystem).
Figure 7-6 shows the overall Trigger System model. The shaded area shows the ARM
subsystem portion.
subsystem portion.
Figure 7-6. Logical Trigger Model
CAUTION
Algorithms execute at most once per trigger event. Should trigger
events cease (i.e. external trigger source stops) or become ignored
(TRIGger:COUNt reached), algorithms execution will stop. In this case
control outputs are left at the last value set by the algorithms.
Depending on the process, this uncontrolled situation could even be
dangerous. Make certain that the process has been put into a safe
state before halting (stop triggering) execution of a controlling
algorithm.
events cease (i.e. external trigger source stops) or become ignored
(TRIGger:COUNt reached), algorithms execution will stop. In this case
control outputs are left at the last value set by the algorithms.
Depending on the process, this uncontrolled situation could even be
dangerous. Make certain that the process has been put into a safe
state before halting (stop triggering) execution of a controlling
algorithm.
BUS
EXTernal
HOLD
IMMediate
TTLTrg<n>
SCP Trg
ARM
/TRI
G
ge
r
S
o
u
rc
e
T
ri
g
ge
r
S
ou
rce
S
e
lecto
r
A
rm
S
ou
rce
S
e
lec
to
r
ARM:SOURce <source>
TRIGger:TIMer <interval>
Trigger
Timer
TIMer
Trigger
Enable
TRIGger:SOURce <source>
Internal
Trigger Signa
Trigger
Counter
TRIGger:COUNt <count>