Next NI2400 User Manual page 38

3
DATALOGGER
NI2400
Scripts
NI2400 automatically provides the script name during its creation. Acquisition timing can
be chosen between 1 second and 7 days, with "DEFAULT" option not overriding NI2400
global acquisition timing.
After selecting "Create" button the new script will be listed below:
Figure 64
Edit button allows the configuration of Virtual Channels contained by the selected Script.
As we see in following Figure, NI2400 provides a large toolbox to program Virtual
Channels.
Figure 65
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3
DATALOGGER
NI2400
Figure 66
an: selects an analog channel (prompts a dialog box to input channel number)
dig: selects a digital channel (prompts a dialog box to input channel number)
mux: selects multiplexer position (prompts two dialog boxes, the 1 st for channel number,
the 2 nd for mux address)
cv: selects a virtual channel (only those included in the same script, prompts a dialog box
for CV number)
Apart from this we have mathematics operations, like +, -, *, /, sin, cos, tan, pi-value.
Logical operations allow operations between alarms states. Every channel (analog, digi-
tal, virtual and mux) provides a checkbox in alarm configuration, VC Alarm with Logical
Operations. This enables alarms to be handled by virtual channels.
Figure 67
The following Virtual Channel will trigger an alarm only if one of the two channels is in
alarm.
Figure 68
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