Справочник Пользователя для National Instruments 321645c-01
Chapter 2
Function Reference — Config_ATrig_Event_Message
©
National Instruments Corporation
2-67
NI-DAQ FRM for PC Compatibles
Config_ATrig_Event_Message
Format
status = Config_ATrig_Event_Message (deviceNumber, mode, chanStr, trigLevel, windowSize,
trigSlope, trigSkipCount, pretrigScans,
postTrigScans, handle, message, callbackAddr)
postTrigScans, handle, message, callbackAddr)
Purpose
Notifies NI-DAQ applications when the trigger channel signal meets certain criteria you
specify. NI-DAQ sends your application a message or executes a callback function that you
provide.
specify. NI-DAQ sends your application a message or executes a callback function that you
provide.
Parameters
Input
Parameter Discussion
mode indicates whether to add a new alarm message or to remove an old alarm message with
the given device.
the given device.
0:
Remove an existing analog trigger event.
1:
Add a new analog trigger event.
Name
Type
Description
deviceNumber
i16
assigned by configuration utility
mode
i16
add or remove a message
chanStr
STR
channel string
trigLevel
f64
trigger level in volts
windowSize
f64
hysteresis window size in volts
triggerSlope
i16
trigger slope
trigSkipCount
u32
number of triggers
preTrigScans
u32
number of scans to skip before trigger event
postTrigScans
u32
number of scans after trigger event
handle
i16
handle
message
i16
user-defined message
callbackAddr
u32
user callback function address